Very rare conn mouthpiece. From between 1881 and 1890, since they add the model numbers to the engraving after 1890 and this one does not have the number yet. Silver plated with wear, very very dark sound, plays great! Finely engraved with a lot of detail – something no modern mouthpieces have. This would be a great piece for a collector or a museum, but also does work well for normal use. Happy to answer questions, accept offers, upload a playtest, etc. Not sure what this will go for, but it’s quite special so I have priced it high.