Hi my name is patrick i am sorry to say i have no history about Thomas himself, but i have a Thomas Dawkins concertina in my opinion i think it works excellently. I really want to go and see if the shop or relics of the shop if it is not still there and i believe it to be at 17 Charterhouse Street london. Unlike your concertina my sticker is very old and i can barely make it out. Mine has a price and his name on it but no number of it. I am also very interested in finding about the Thomas Dawkins & Co so if anyone has anything about him post it.