Mirano Echo Chamber 3R Echo Effect, c. 1960's, ser. #2C521.

Mirano  Echo Chamber 3R Echo Effect,  c. 1960's, ser. #2C521.
Mirano  Echo Chamber 3R Echo Effect,  c. 1960's, ser. #2C521.Mirano  Echo Chamber 3R Echo Effect,  c. 1960's, ser. #2C521.Mirano  Echo Chamber 3R Echo Effect,  c. 1960's, ser. #2C521.Mirano  Echo Chamber 3R Echo Effect,  c. 1960's, ser. #2C521.Mirano  Echo Chamber 3R Echo Effect,  c. 1960's, ser. #2C521.Mirano  Echo Chamber 3R Echo Effect,  c. 1960's, ser. #2C521.