Chouinard Equipment - Ventura California USA - Chouinard tubular ice screws were produced in four sizes. - c.1976 - 1986
Chouinard 1976 catalog shows Chouinard Tubular ice screws and the Chouinard Wart Hog
Chouinard 1976 catalog
Chouinard 1976 catalog
Chouinard - Wart Hog - First produced in 1976 and there is no mention of Chouinard Wart Hogs in the 1978 catalog and on. - The Wart Hogs shown have three different finishes. - YC Collection
It looks exactly like a 1989 Chouinard Ice screw but there is a feint diamond in a square mark, which shows this is a 1990 Black Diamond product. The 1988 Chouinard ice screw version has "U.S.A."
Chouinard - Prototype - Pound-in ice screw - Was not mass produced. YC Collection c.1976
Chouinard Ice Screw Ratchet - c.1983 - The ratchet first came out in 1983, but was redesigned adding a thicker holding collar, and adding more teeth to the ratchet. The 1984 catalog lists the new ratchet being made of two colors, green and black, but I have seen a few versions all being black. Photos showing the comparison between the 1983 and 1984 Chouinard ice screw ratchet versions.
Chouinard 1983 catalog
Chouinard 1984 catalog
There is no mention in the catalogs of the red/silver version of the Chouinard ratchet. So I figure it was the last ratchet that was created in late 1986, before discontinuing the ratchet beginning of 1987.