Offered is this Squash Blossom necklace, which has a mark we have not seen, or been able to find. We have Native American Silver Hallmarks - 5th Edition by Bille Hougart, and did not see if there, either.

It's a lovely double strand of fluted sterling beads, and blossoms, with a solid Naja.

The Naja has a mark on back with V VV (actually looks like a V W, but the W is clearly two Vs together). The closest we've seen is William Vandever, though the mark is VV V, all on one line, with the V first.

Measures
about 25" end to end
The Naja measures 2-1/2"L x 2-3/8"W
Weight is 153 grams

Not marked but tested sterling silver.