|style||con tube - taper|
|based in||U K|
|horn dia||50 mm|
|marks||OL380A 9^ 50 FWA Oct 50|
|seller note||Vintage Hearing Aid Conversation Tube Oct 1950. Bakelite hearing aid / speaking tube / ear trumpet with a silk covered flexible tube; "Oct 1950" on it; an estate find; works as intended, although is missing the earpiece; in total 100 cm long.
|comment||I don't have one of these - the marking is very interesting, I look forward to examining it. FWA is unknown at this time. EWA could be Eschmann Walsh Associates ?|
|details on the terms may be found here|