Production volumes are in year

PreA (1997) * 235 produced pieces, Tritium luminous material, Case number:6500,

A 1500* (350 produced only), Tritium luminous material, Case number:6502, ID starts with BB,

B (1999) 3000* (800 produced only), Tritium & Luminova luminous material**, Case number:6519, ID starts with BB,

*PAM00001, PAM00003 & PAM00004 gathered under the same millesimation,

** The move from Tritium to Luminova was during production of the B-Series. Until now no exact information by Panerai is known. The view of many Paneristi is:

PreA & A-Series with case number OP6500 & OP6502 had 100% Tritium dials (maybe changed during revision to Luminova)

B-Series with case number OP6518-OP6521 has less than 10% an original Tritium dial (some were flipped by owners from Luminova to Tritium to increase the value of the watch)

C-Series has 100% Luminova dials.

For more information review following website: https://perezcope.com/2017/01/19/panerai-b-series-sought-after-tritum-and-luminova-dials/