Overview
From the excellent resource of militarycarryknives.com:
"These knives were made exclusively for the Cutlery Shoppe. They are very similar to the early non-canted blade CT2 knives, but with the following differences: (1) The knives are made from 440A stainless steel rather than the original L6 tool steel. (2) The knives have a four digit serial number with a CS prefix
These knives were sold with a C3 type Cordura™ sheath in the late, blue and black box with a label that reads "Mark II™ / WASP / #GB5705". Note that this is the same box label used for the CT3N unmarked 20th. Anniversary knives that were sold by Cutlery Shoppe.
The "Cat's Tongue" handles on these knives have a brighter appearance in contrast with the usually darker gray handles of the original knives. The CT4 knives are found on 1989-1996 knives scattered in batches throughout the serial range of CS0003 - CS1755. The CS prefix on the serial number stands for "Cutlery Shoppe" and was used to indicate that the knife was not an original earlier knife."
This one is near mint condition (mark on handle) with the sheath.
Blade Steel: 440A