I'm pleased to see that a few more like this are about. I didn't notice any small gap due to different movement being used, but I shall certainly have a look at some point and see if this is the case(excuse the pun!)

: Add me to the list as well. Abel Court worked on my watch and sent
: me the following message:
: I noticed the case is actually one for a 3 register…so it has the
: reference 73663 between the lugs. I’m not sure you were aware
: of this!? No big problem but you can see that the dial is not
: close to the inner bezel of the crystal, there is a small gap
: between the chrome flange and the dial. This is because the case
: is suited to house a Valjoux 7736 instead of the 7734 that is
: inside now…the 7736 is thicker…