This your chance to own a real piece of American history.These are new old stock signs from the the 1960’s.The information on the box states manufactured after July 5, 1962.These were shipped to Fort McHenry in Baltimore Maryland.The signs are made of galvanized steel & were screen printed the old fashioned way, black print first and then the yellow over the Black. I would like to repeat that these are new old stock from the 1960’s and have never been used or applied. The signs are 10″x14″. We have a good supply of these so if you are interested in multiple signs please CONTACT US .