Counterfeit Pocket Cornets
For more than a decade, the market has been inundated with very cheaply made replicas of vintage pocket cornets, evidently made in India.
These are very easy to identify as the two makers’ names were never on the same instrument, and one is misspelled. Further, they all bear the same serial number as shown below!
More recently, examples have appeared which just say Class A, Boosey & Co. If this is the stamping, then you have to rely on the design and details to identify the counterfeit.