Comments:
pam 90 buckle
i just purchased pam90j. I want to try with buckle, instead of clasp, Please can i get some help on how to change?
You have to unscrew the deployant off
I don't have my deployant with me right now but I think the Panerai deployant is attached in the same way as other deployants.
In the middle of the section where the strap connects to the deployant, there should be a little screw. Unscrew that to detach the deployant. Once u detach the deployant off, then screw in the tang buckle and u'll be all set.
Someone please correct me if I'm wrong 
Cheers,
Anthony