MZ,
There should be a street address engraved in the top rib, 98 New Bond Street, London. Look for a label with that address, Dixie gun works has some, Peter Dyson, Henry Krank, CSMC. There was also a thread on this forum if I remember correctly concerning acquiring a letter from the current owners of Lancaster records, Ron Wharton in the UK. If you can, also look at D. Dallas book, Atkin, Grant, andLang. There is a chapter on Charles Lancaster. Well worth reading. Lancasters are undervalued in today’s market but were among the top in London back then. There are several up for auction on Holts next month.
Congrats,