https://www.liveauctioneers.com/price-result/marbles-other-handmade-clambroth-58-buffed/
Marbles: Other Handmade, Clambroth. 5/8". Buffed.
OTHER HANDMADE, Clambroth. Very rare Clambroth. Opaque black base. Eight dark red surface bands. There was overall pitt
5 8marbleshandmadeclambrothbuffed