Vintage Early Model Oboe, Unbranded

Early prototype Triebert system 4 oboe. Interesting piece, with craftman key hole markings on upper joint. No serial numbers, but something that resembles a small stamp, looks like an F, could be a scratch. Corks ok, lower joint with damage. Bell has two cracks, upper joints with integrity. Old case with rust on latches, handle leather very brittle. a true relic. Bidding away!