One jewel it seems, but not much else. Unremarkable, but quite neat and tidy.


According to the British Museum https://www.britishmuseum.org/collection/object/H_1995-0505-1, this was made between 1965 & 1970. Still starts, stops and resets wonderfully.

 

I think I see pallet stones, in which case, maybe 3 jewels, four (maybe), and possibly 7 jewels.