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Conn 20J recording bass made in the 1960's | Rich Mateyko | Flickr
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Conn 20j Tuba
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Conn, 25J, BB flat tuba, 4 piston, 1967 | V & E Simonetti Historic Tuba Collection
Conn, Wonderphone Giant, EE flat tuba, 3 pistons, 1925 | V & E Simonetti Historic Tuba Collection
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Tuba Conn 6/4 Contra Baixo 20j - YouTube
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I have found the cross bread from a sousaphone and a tuba, it is beutiful : r/marchingband
AG Tubas & Cia - Tuba Conn 20j Compacta Altura 93 cm e... | Facebook
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Conn, 20J recording, BB flat tuba, 3 piston, 1946 | V & E Simonetti Historic Tuba Collection
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This is the result of the first paint job on the Conn 20J.… | Flickr
CCB Hino 70 -- Tuba Conn 20J - YouTube
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