I find myself looking for a replacement crystal for a 568.011 c-case and some searching leads me to looking for the 5108 crystal, however I have come to find that there are both PX and PZ varieties out there, can anyone explain the difference between the 2?

Edit: I feel like quite an idiot, realised just than that its the gold and silver tension rings.

I wasnt sure if it was about the crystal height, but I must have gotten a 5107 which is why it is not fitting, the ebay listing says 5107 and 5108 in the listing

 

PX has gold tension ring.
PZ has silver tension ring.

 

Exactly, and that's why when people ask for a crystal part number (or crown for that matter) you need to always specify the material/colour of the case.

 

What code is the rose gold ring by the way? - I wonder how rose gold is handled

 

The full set is:

PW - black ring
PX - yellow gold ring
PY - pink gold ring
PZ - steel ring