I wouldn't imagine it is worth much. The same horn bearing the real maker's name (like Buescher, Conn, Martin, etc.) would be worth a little more, but even then, not much.
Anyone who buys something like that should figure in the cost of a full overhaul (around $500 to $700, +/-) so that detracts even more from an old horn like that. Yes, there ARE some very nice old horns from that era (I own several) and with some judicious buying, someone could make it into a player, I'm sure.
I'd guess $100 to $200 for yours, but I am no expert on pricing vintage stencil saxophones.
By the way, does your saxophone have any marking on the back by the serial number that reads, "Low Pitch" or "LP"? It probably should, from that era. If not, and the horn is a HIGH PITCH model, it would have almost no value other than some restaurant looking for a wall-hanger (or a lamp-maker, etc., etc.). DAVE