Produciton volumes are in year

PreA (1997) 105 produced pieces, Tritium luminous material, Case number:6500,

A 1000* (250 produced pieces only), Tritium luminous material, Case number:6502, ID starts with BB,

B 1500* (400 produced pieces only), Tritium & Luminova luminous material***, Case number:6520, ID starts with BB,

C 1500** (250), Luminova luminous material, Case number:6520, ID starts with BB,

D (2001) 1200** (200) pieces, Luminova luminous material, Case number:6520, ID starts with BB,

*PAM00002, PAM00009 & PAM00010 gathered under the same millesimation,

**PAM00002, PAM00010 & PAM00055 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/