COMMAND HARDHAT STICKERS, US PUBLIC HELATH SERVICE ENGINEERS 1913 in Color
This Hardhat sticker is cut-to-shape and made of 20-mil vinyl. With the standard of 2.5 inch Diameter so it is seen from a far.
Because this has a long life under normal conditions, this is a Green product. The minimum life is about 1 year
Note: for over 40 years, the size of the command stickers had been 2.5.diameter. The 2.5 inch size came in to use because the print shop, was asked to help fix the problem with the sticker coming up and getting dirt under the sticker.