Production years are

A (1998) 1500 (995 produced pieces only), Tritium luminous material, Evolution: Black calf strap. Bezel with 12 divisions, Case number:6506, ID starts with BB,

B 1500 (699 produced only), Tritium luminous material, Evolution: Rubber strap, Case number:6527, ID starts with BB,

C 1500, Tritium luminous material, Case number:6561, ID starts with BB,

D 2500 (1500 produced pieces only), Tritium luminous material, Evolution: New brushed steel bezel divided into 60ths, Case number:6561, ID starts with BB,

E 2500 (1400 produced pieces only), Tritium luminous material, Case number:6561, ID starts with BB,

F 1500, Tritium luminous material, Evolution: New applied luminous dots, Case number:6561, ID starts with BB,

G 800, Tritium luminous material, Evolution: BDR buckle, Case number:6561, ID starts with BB,

H 1100, Luminova material, Evolution:New Slytech bridge, Case number:6628, ID starts with BB,

I 1500 (1350 produced pieces only), Luminova material, Case number:6628, ID starts with BB,

J 1300, Luminova material, Evolution: Strap Interchangeability + Runner Lever + Nul + New case back engraving with OP logo + Panerai logo on the buckle back, Case number:6688, ID starts with BB,

K 1000, Luminova material, Evolution: New metalic clicks bezel + Case disposed for new metal bracelet, Case number:6771, ID starts with BB,

L 1000, Luminova material, Case number:6771, ID starts with BB,

M 800, Luminova material, Case number:6771, ID starts with BB,

N 800, Luminova material, Case number:6771, ID starts with BB,

O 800, Luminova material, Evolution: New backcase engraving “DIVERS PROFESSIONAL”, Case number:6771, ID starts with BB,

P 800, Luminova material, Case number:6771, ID starts with BB,

Q 800, Luminova material, Case number:6771, ID starts with BB,

R 800 pieces, Luminova material, Case number:6771, ID starts with BB,

S (2016) 800 pieces, Luminova material, Case number:6771, ID starts with BB,

OOR* 120 pieces, Luminova material, Case number:6771?, ID starts with BB?,

*OOR means “Out of Range”,

PAM01024 is the successor for the PAM00024