well I have had a look, and not seen any of these listed in the collections on CC or on the London coins auctions lists
bought it as a 1734, when I checked it, thought it was 1 over 0... got worried it might have been a 7, but checking it again noted the lump sticking out of the bottom links up perfectly with the part coming out of the top, making it conclusive that that is a 0 under the 1.
the existence of 1732/1 also helps to confirm, as it shows they were re-cutting dies in that period.