Does anyone know what caliber this is and how hard it would be to find a case?
It's quite tempting....

 

Appears a redial to my untrained eyes.

 

Wonder if @Archer would appreciate that one, being the rock hound that he is!

 

I saw it first
(and i don't quite see how one would do a redial on that)

 

Looks like it says cal. 528.

Quite cool actually. Going by the gold hands and crown I assume they opted to melt down the gold case.

And I don't think it's a redial.

 

It is an opal dial. Omega, Longines and several other brands used to make jewel watches with these:















You can easily imagine what has happened to the case of that watch.

 

If I remember correctly @adam78 has a very nice example of one of these.

 

Thanks Dragoman, I did wonder.... finding a case is a project...

 

I've got a lapis dial from a Piaget somewhere around here. The watch was melted for gold value (it was a very dated style) but I bought the 9P for a spare parts movement for my 1961 Piaget.