I think it’s a replica of a 19th Century famous, reputable and historic pottery/china/cookware maker with distinctive insignia; they possibly also did textile. I think from New England. Possibly what’s referred to as in the craftsman style, but I don’t know about that for sure. This is not real expensive, and I think the company does online mail order.
The mug is thick, white, nice porcelin. A 1/4″ dark green band runs just below the rim. A much narrower band runs parallel below it, about an inch down. Within this inch between these bands are three equilidistant figures: One looks like an one of those universal circle signs for men or women. Inside the circle is something that resembles 2 mirror-imaged “Rs” that looks like a cattle ranch insignia.
The second figure resembles the letter “T” as if it were made with 6 children’s blocks–3 brown, 1 white and 1 the same dark green.
The third, the smallest, looks like an old-fashioned man’s hat; it’s the same brown. Thanks so much.