Case Tested XX starmp
Case Tested XX 1920-40

1920-40 marks a period of very high quality pocket knives and ingenuity for the Case brand.  Many of the patterns that would thrive into the next 50 years would come from this most important era in the company’s history.  The “Tested XX” trademark was officially registered in 1905 by Jean Case of the Case Brothers Cutlery Co of Springille, N.Y.  In 1914, Jean sold the rights of the Tested XX trademark to J. Russell Case of W.R. Case & Sons Cutlery Co for the sum of $1500.

The stamp from the 1920-40 era features a large circle C that extends underneath the “ASE” in Case.  Underneath this were the words, “Tested XX.”  The shields on the handles from the Tested era feature a “closed” C in the word Case.  After 1940, most of the shields had an “open” C. The bone and stag handles from this era are remarkably striking as well.  These Case Tested XX pocket knives are scarce and highly sought after by collectors today including the large cigar, large stockman and large congress knife.  Check out my Case knives page and Remington knives page as well.

Check out these vintage Case Tested XX Knives that are currently available on eBay I appreciate any traffic from these links as I earn a portion of eBay’s commission when an item is purchased, at no extra cost to you. THANK YOU!!! – Jesse, oldpocketknives.com

old antique case tested xx 6392 stockman pocket knife

$150.00  
End Date: Wednesday Feb-17-2021 13:50:00 EST
Buy It Now for only: $150.00
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Case Tested XX rough black 1920-40 4 blade closed knife

$169.38  (9 bids)
End Date: Friday Jan-29-2021 11:14:00 EST

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ANTIQUE/VINTAGE CASE TESTED XX 1920-1940 COKE BOTTLE POCKET/HUNTING KNIFE LOT

$420.00  
End Date: Saturday Feb-20-2021 09:40:55 EST
Buy It Now for only: $420.00
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Case tested 6254 ss limited edition bone trapper pocket knife USA mint.

$119.99  
End Date: Thursday Feb-25-2021 19:10:07 EST
Buy It Now for only: $119.99
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RARE CASE TESTED XX STAG FOLDING HUNTER KNIFE 5165 SAB 1920-40

$295.00  
End Date: Friday Jan-29-2021 08:16:36 EST
Buy It Now for only: $295.00
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Vintage RARE 1932-1940 CASE XX TESTED cokebottle folding hunter knife C61050SAB

$445.00  (47 bids)
End Date: Tuesday Jan-26-2021 21:30:50 EST

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Case Tested 6219

$200.00  (1 bid)
End Date: Saturday Jan-30-2021 23:34:55 EST

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old antique case tested xx 6308 rough blk pocket knife

$130.00  
End Date: Saturday Feb-13-2021 15:43:06 EST
Buy It Now for only: $130.00
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CASE XX GREEN BONE TESTED JACK KNIFE, 1920-1940, 6231 , FREE SHIPPING

$155.00  
End Date: Wednesday Jan-27-2021 20:22:47 EST
Buy It Now for only: $155.00
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CASE XX GREEN BONE BOMB SHIELD TESTED TORPEDO JACK, 6299, 1915-1925, FREE SHIP

$165.00  (1 bid)
End Date: Sunday Jan-31-2021 18:53:36 EST

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Vintage Lot of (4)- CASE TESTED XX / CASE XX Smooth Black Pocket Knives.

$162.50  (24 bids)
End Date: Saturday Jan-30-2021 21:52:14 EST

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Case Tested 1920-1940 Extremely Rare! “BEAUTIFUL EARLY ROGERS BONE!”

$158.62  (10 bids)
End Date: Wednesday Jan-27-2021 14:10:42 EST

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case tested knife rare kingfisher vintage knife lot stainless case tested knife

$400.00  
End Date: Monday Feb-01-2021 17:57:52 EST
Buy It Now for only: $400.00
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Vintage Case XX Trapper #6254SSP Mfg.65-69 Tested XX Razor Edge: Penny Start

$77.12  (9 bids)
End Date: Tuesday Jan-26-2021 20:05:54 EST

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Vintage Case Tested XX Hawkbill Folding Knife Antique 1920-1940 Era

$400.00  
End Date: Sunday Feb-07-2021 11:19:29 EST
Buy It Now for only: $400.00
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CASE XX TESTED SMOOTH BLACK CLIP MASTER? ,2231? 1920-1940, FREE SHIPPING

$130.00  
End Date: Saturday Jan-30-2021 20:22:59 EST
Buy It Now for only: $130.00
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CASE XX TESTED PEN KNIFE IMITATION PEARL 9233 LONG PULL, 1920-1940 FREE SHIPPING

$95.00  
End Date: Monday Feb-01-2021 20:16:30 EST
Buy It Now for only: $95.00
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CASE XX 1995 BRADFORD COLLECTION-TESTED XX 520093 MUSKRAT--AWESOME STAG

$103.50  (4 bids)
End Date: Wednesday Jan-27-2021 20:18:55 EST

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CASE XX TESTED STAG DOUBLE END,5279 LONG PULL, 1920-1940, FREE SHIPPING

$145.00  
End Date: Monday Feb-01-2021 20:14:16 EST
Buy It Now for only: $145.00
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Case Tested XX Two Blade Copperhead Pattern Knife - Buy It Now!!

$225.00  
End Date: Saturday Feb-06-2021 15:29:28 EST
Buy It Now for only: $225.00
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Vintage Case Tested 3 blade Green Bone Stockman

$395.00  
End Date: Saturday Feb-06-2021 19:38:33 EST
Buy It Now for only: $395.00
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RARE Case Tested XX Second Cut Red Stag Trapper Knife 5254 (1920-1940)

$3,499.00  
End Date: Sunday Jan-31-2021 20:16:01 EST
Buy It Now for only: $5,250.00
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1990 CASE BROTHERS TESTED XX 6391 Jig Bone Classics Cigar Whittler MINT IN BOX

$76.00  (2 bids)
End Date: Wednesday Jan-27-2021 21:15:44 EST

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old antique case tested xx 3 7/8 inch 3 bld pocket knife

$225.00  
End Date: Saturday Jan-30-2021 16:11:48 EST
Buy It Now for only: $225.00
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**RARE** CASE XX TESTED GENUINE PEARL LITTLE CONGRESS, 8269, 1920-1940 FREE SHIP

$315.00  
End Date: Monday Feb-01-2021 20:15:40 EST
Buy It Now for only: $315.00
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CASE XX TESTED SLICK BLACK CIGAR JACK, 22055 LONG PULL, 1920-1940, FREE SHIP

$185.00  
End Date: Monday Feb-01-2021 20:02:10 EST
Buy It Now for only: $185.00
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Case Tested XX 1920-40 8264TF mother of pearl mint tip bolsters knife

$329.99  
End Date: Wednesday Feb-17-2021 12:16:13 EST
Buy It Now for only: $329.99
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Vintage Antique Case Tested XX Green Bone Medium Coke Jack Folding Pocket Knife

$1,499.99  
End Date: Saturday Feb-20-2021 11:53:40 EST
Buy It Now for only: $1,499.99
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CASE XX TESTED ROUGH BLACK LONG PULL STOCKMAN, 63047 1920-1940, FREE SHIPPING

$170.00  
End Date: Saturday Jan-30-2021 20:02:16 EST
Buy It Now for only: $170.00
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Case Tested XX 1920's-40's 6265 Folding Hunting Knife

$775.00  
End Date: Tuesday Feb-02-2021 17:26:03 EST
Buy It Now for only: $775.00
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Vintage Case Tested Stag Whittler

$1,800.00  
End Date: Monday Feb-08-2021 18:03:41 EST
Buy It Now for only: $1,800.00
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VINTAGE CASE TESTED 1920s 1940 6143 Grand DADDY BARLOW RED FIBEROID HANDLES Mint

$350.00  
End Date: Tuesday Feb-23-2021 14:15:17 EST
Buy It Now for only: $350.00
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Vintage Large Case Tested Jack Knife

$195.00  
End Date: Thursday Feb-18-2021 18:24:18 EST
Buy It Now for only: $195.00
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Vintage Large Case Tested XX Jigged Pocket Knife USA

$250.00  
End Date: Sunday Jan-31-2021 18:58:12 EST
Buy It Now for only: $250.00
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EARLY CASE XX TESTED BRADFORD PA 1914-1920 6488 GREEN BONE LP POCKET KNIFE

$18,500.00  
End Date: Monday Feb-15-2021 12:26:36 EST
Buy It Now for only: $18,500.00
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CASE XX TESTED ROUGH BLACK CATTLE KNIFE, 6345, 1920-1940, FREE SHIPPING

$165.00  
End Date: Saturday Jan-30-2021 20:07:39 EST
Buy It Now for only: $165.00
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Case Tested 1920 1940s Hunting Knife Beautiful Green Bone Handle Nice Excellent

$595.00  
End Date: Monday Feb-22-2021 15:20:20 EST
Buy It Now for only: $595.00
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CASE XX TESTED STAG SMALL JACK KNIFE, 52241/2, 1920-1940, FREE SHIPPING

$145.00  
End Date: Monday Feb-01-2021 20:12:00 EST
Buy It Now for only: $145.00
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Case Tested SMKW Classic 53046J Knife STAG

$165.00  
End Date: Thursday Feb-04-2021 17:40:23 EST
Buy It Now for only: $165.00
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CASE XX TESTED ROUGH BLACK CATTLE KNIFE, 23451/2, 1920-1940, FREE SHIPPING

$130.00  
End Date: Monday Feb-01-2021 20:03:27 EST
Buy It Now for only: $130.00
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Case Tested 1920 Hunting Knife Green Bone Handle Very Nice Excellent condition

$550.00  
End Date: Sunday Feb-14-2021 18:11:12 EST
Buy It Now for only: $550.00
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CASE XX TESTED SLICK BLACK PEANUT, 2220, 1920-1940, FREE SHIPPING

$85.00  
End Date: Monday Feb-01-2021 20:19:55 EST
Buy It Now for only: $85.00
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CASE TESTED XX 1920-40 TEAR DROP JACK--6228 SPEAR BLADE-- GREEN BOVINE BONE

$275.00  
End Date: Friday Feb-19-2021 23:30:58 EST
Buy It Now for only: $275.00
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CASE XX TESTED COKE BOTTLE, C91050, 1920-1940,*VERY, VERY RARE* AWESOME MINTY

$310.00  
End Date: Tuesday Jan-26-2021 20:23:49 EST
Buy It Now for only: $310.00
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RARE VINTAGE CASE TESTED XX 1920-1940 Green Bone CATTLE KNIFE 06245 1/2 Lp Mint

$700.00  
End Date: Saturday Feb-13-2021 18:51:19 EST
Buy It Now for only: $700.00
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**BEAUTIFUL** CASE XX GREEN BONE TESTED LONG PULL MOOSE, 6275SP, 1920-1940

$410.00  
End Date: Sunday Jan-31-2021 20:04:02 EST
Buy It Now for only: $410.00
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Rare Antique Vintage Case Tested XX Green Bone Whittler Pocket Knife Estate EXC

$1,499.99  
End Date: Friday Feb-12-2021 10:27:19 EST
Buy It Now for only: $1,499.99
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CASE 5265 TESTED, PRE 1940, FIVE STAR ADDITION TO ANY COLLECTION # slot #2135

$575.00  
End Date: Saturday Jan-30-2021 19:43:54 EST
Buy It Now for only: $575.00
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Vintage Case Tested XX Green Bone Scout Knife TIGHT 640045R 1920-39 NM

$550.00  
End Date: Saturday Feb-20-2021 05:34:39 EST
Buy It Now for only: $550.00
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VERY RARE CASE XX TESTED HA1093 HIGH ART BATHING BEAUTY TOOTHPICK POCKET KNIFE

$245.00  
End Date: Wednesday Jan-27-2021 12:10:10 EST
Buy It Now for only: $400.00
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