I see the Mercury listing now (manual out and dusted off). 2 models. 1961 through 1965. Either the 24 or 22 movement. One with sweep second hand, the other sans.
I will look for a chrome plated sweep model # 1037 or 1044. It has indice marks at 1/3/5/7/9/11 and arabics remaining.
Neat resource - glad you sent it. I forgot to ask you - do you want the Anker sent back? I could send it with some of these other units that I got if you like them (70+ to sort through). I have not even looked at them yet (been busy). Hey maybe there is a mercury here somewhere!