Maybe Trumpet / Cornet etc. Trumpet Mouthpiece ?. 4cm across mouthpiece top. May be early 20th C. Sold as used item. Weighs 145g approx. Needs polishing.
Vintage 1970s Skylark 1/8 Violin With Bow & Case - Missing 1 String
Vintage USSR military brass trumpet with original case, vintage cornet trumpet 1
Two nice NOS unused vintage Ludwig Drums 1/4x28 wing bolts, works on Slingerland
Vintage Kay 61 1/2 Mandolin w/ Kluson Deluxe Tuners Birdseye Maple
Vintage Jubeltone Autoharp 1 string broken 1960s Red Wood Box music sheets
HOHNNER VINTAGE ACCORDION VERDI 1, GREAT ACCORDION, NEW LEATHER STRAPS
