§23.12. Coast Guard identifying insignia. — Inbound Citations

(3) The sticker must be of a type that will remain legible for at least 2 years when exposed to a marine environment, and that cannot be removed without being destroyed. The sticker must be about 100 mm × 150 mm (4 by 6 inches), with the last digit of the year of expiration superimposed over a background color that corresponds to the colors specified for the validation stickers for recreational-boat numbers in 33 CFR 174.15(c), and be marked with the Coast Guard identifying insignia in accordance with the requirements of 33 CFR 23.12. The sticker must also contain the following:

(iii) Identification of the servicing facility, printed on the sticker or indicated on the sticker by punch using an approval code issued by the Commandant.