Here we have a Hasbro roll top pencil box from the 60s or early 70s. Hasbro is the parent company of the Empire Pencil Company and Petigree. US made and very collectible. The hardest one to find and most expensive one is the Sterling Plastic Company model #526 which I still do not have. Another one would be the Bakelite roll top box.The last new Sterling Plastic one on EBay sold in September 2008 for $81.00. This Hasbro in the picture is a nice addition to the collection and is in excellent condition.This one even came with the original 6" plastic ruler. Unlike Sterling Plastic, Hasbro does not put model numbers on their items so it is harder to find out what they were making as far as school supplies go.These types of US made roll top pecil boxes are very collectible and should be in your collection.This is the first of about six posts about old school supplies and maybe a give a way.