I am not a knife collector.  I got about 200 in a large lot purchase.  Please ask if any questions because I don't know details you knife folks will likely need to know.  I am taking several photos so that should help, but I will be glad to answer questions.  Also, I did not clean up so some of these I am listing should clean up better than they show now.

Marked AQUA-LUNG U.S. DIVERS CO. on black handle.  Blade is marked Stainless Steel.  Japan.  There are 5 marks on the blade showing 1" - 5".  Total length 10.5", blade is 6".  Shows some light wear, but overall good condition.

Sheath is original and also has the AQUA-LUNG U.S. DIVERS CO. seal on it.  Some wear, but overall mostly good.