Duchampian Salesman Sample Spring Hinge antique lacquered box I am quite sure original

I am quite sure original to them and which is in very good condition

with horizontal folds that should flatten out pretty easily if pressed under something heavy and a little staining here and there and along the left edge

messy 45 gives way to a very strong and assertive 50

The marks stamped on the bottom include "12-22"

The fan itself adjusts from flush front to entirely horizontal

Duchampian Salesman Sample Spring Hinge antique lacquered box I am quite sure originalI find this c. 1940s 50s salesman sample hinge very very Duchampian a "readymade" for sure, but the fact of it being a hinge making much more so: all about latent potential, tension, and the mechanics of activation, in this case the possibility of literally springing it open or snapping it closed. These are the things it makes me think about anyway! Plus just the word "hinge" and all it connotes. 6 3 8 x 2 5 8 x 1 7 8 d and in good condition, still