Panerai today has implemented an official policy to begin replacing any non-current production PAM's with tritium dials/hands with superluminova when your PAM's are sent in for servicing at the Panerai Service Center, only if the tritium is found to be flaking or chipping off. The reason Panerai is doing this is because there is no more tritium stock available.
If you request that Panerai not touch your tritium hands/dial when your watch is in for service, Panerai will not service your watch if it sees the tritium chipping off. So those who own any A, B, or C series Panerai watches with tritium dials and/or hands, if you wish to keep your original tritrium dial/hands, take your own risk if you send in your watch to Panerai for servicing.
And also, if only the tritium on the hands are flaking off and the tritium on the dial is perfectly fine or vice versa, Panerai will still replace BOTH hands and dial to superluminova because Panerai wants matching hands and dial.
Cheers,
Anthony
PS. And for those who don't know, when tritium begins flaking off the hands or dial, these little pieces can find their way to the watch oils and lubricants, among many other places, which can then damage your movement.
http://panerai.watchprosite.com/show-nblog.post/ti-411796/
