A very nice original complete, clean machine including original coin collection box. Doesn't always functions as it should when a dime is inserted and sometimes you have to wait for the dime to drop. Needs some adjusting. Lock has been replaced. To open, turn 1/4 turn clockwise. Machine dates back to the 1930s and 1940's.This Schermack Products Co. Model 310 3¢ Stamp Machine is a vintage vending machine that dispenses postage stamps. This original machine, made in the United States by Schermack, measures 13" tall  and does include a new lock and two keys. It is a collectible piece that would be great for enthusiasts of vintage vending machines or stamp collectors looking for a unique addition to their collection.