Hi,
are you sure it is a 7922? looks like a 7924 to me, big crown, brevet, 200m dial!?
the 7922 is a small crown, 100m!...
The experts will confirm, Jeff? Nico?...
in that case, that's even more good news for you in terms of value, fantastic watch to get!
the ref number should be written in the case back and between the lugs.
Matt