I've been waiting until I returned from doing research at the shop before posting this!
Very early (pre-1963) Solingen blade with the stamp on the ricasso.
Skeletal design which has never had handles added.
(per Scott, the Shop Foreman, Jason Randall and Aaron Johnson.
I consider these three men some of the top authorities on the subject.)
Unique with a Model 15 style brass hilt! (correctly soldered on both sides)
Certainly a one of a kind knife!
Hope you enjoy it Sam!