I've owned a few other examples of this type over the years. This one is probably my "forever coin" for the type because of the wonderfully engraved obverse which is in untypically good style for the issue.

BTW I always put references and provenance in the alt text. All coins mine unless otherwise noted

Plate & text from the 1960 Schulman sale cited above. The distinctive bankers mark on obverse made it easier to ID and that toning guaranteed it was not something fresh on the market but it was not on any of the usual internet auction aggregators or sources & seemingly had not transacted since 1960