This is an unusual and outstanding bugle from WWII. It is marked US Regulation, but also has an etched tree mark below it, which deserves further research. The mouthpiece on this bugle has been undated to a ruby bakelite embouchure BI 420 mouthpiece. The patina is good on this one. Shows a few little dents around the bell of the horn, but is in otherwise good condition. It is heavy for its size and is very good quality. Measures 16 3/4" long total length. Would be a wonderful gift for the military collector or musician.