232 is limited edition of 1938 with gold hands. I think you may be able to buy in the 2ndary market for a discount from the retail list price of 6400 USD right now (if you go this route, please buy from someone you clearly trust and has unparallel recommendations-I wouldn't recommend for 1st watch buyers unless you're comfortable...i will not buy in 2ndary unless I know the seller).
210 is not limited and black hands. The 210 retail list is 4500 USD ,(I think).
Not sure of the movements or history. But the 232 is 47mm and the 210 is 45mm. I tried on a 232 and it seems to be a nice fit.
Hope this helps,
-David