Stuey....no need of any apology whatsoever !
My old Dad inherited a Tudor watch, from an American uncle, when I was about 13, in 1966. I can recall him saying that the case was a Oyster case, made by Rolex, but the movement wasn't, in order to save money.
The Oyster case was the best that money could buy, in 1926.
By the way, I have found out today that Rolex was first started in London, not Geneva, in 1905 !
Makes you proud to be British !