UNKNOWN # 11 - Ice Piton
- mfg mark: "MADE IN JAPAN"
- c.1920s - 1930s
UNKNOWN # 12 - Czech Ice Screw Piton
- no mfg marks on the ice piton
- Sold at the Army surplus store for many years
- Donated by: Tom Taber
UNKNOWN # 13 - Ice piton
- c.1950s/1960s?
- Weight : 16oz
UNKNOWN # 14
- Plated welded ring ice screw
- c.......?
UNKNOWN # 15 - ice screw
- Possibly made by Steidle, or Salewa, or Stubai
- Weight: 168g
- Made late 1950s into the 1970s
UNKNOWN # 16 - Swiss pipe with 3 slots
- Mfg mark: "Made in Switzerland"
- c.1950s
REI - 1958 catalog
UNKNOWN # 17 - Unwelded hardware store eye screw
UNKNOWN # 18 - Welded hardware store eye screw - c.1960s
- No mfg marks on the eye screws
UNKNOWN # 19 - Ice screw piton
- No mfg marks on the ice screw
- Possibly ASMU or from Switzerland
- c.1960s
  In the 1961 ASMU catalog it shows that the ring ice screw is a ASMU product, 1 size. No mention of a ice screw without a ring.
  What is strange is that in the 1961 REI catalog it shows the ASMU ice screw with a ring, and a similar one without the ring.  And the ring version has two sizes. But the catalog lists the items as "Swiss" ice screw pitons, where ASMU is German. I thought that this could be a mistake in the catalog, but in the 1963 Sporthaus Schuster catalog, the ASMU ice screw piton is removed. So what I am saying here is, I don't think Sporthaus Schuster for the year 1962 created a second size ring ice screw piton and a ringless version as well, just to discontinue it in 1963. So where actually did these super cool ice screw pitons come from? And since ASMU doesn't show that they made a ringless version, it places the ringless version in the Unknown file listed as UNKNOWN # 19 ice screw piton.
REI 1961 catalog
UNKNOWN # 20 - Two eye ice piton
- Mfg mark: "Made in Austria"
- Hmmm possibly made by Stubai but unmarked? Pre-Stubai so maybe F.Ralling mid 1950s?