Luminor Power Reserve 44mm
Unsurprisingly the Luminor Power Reserve is a version of the standard 44mm Luminor Marina with a power reserve indicator and a date under a cyclops at 3. The power reserve, like most of the rest of the line, is or has been available with the polished steel case, in a PVD finish, or in titanium.
In the first "A series" of this iteration the power
reserve hand was pointed
, and sat on a more distinct "track", but from the B series
onwards the hand changed to a standard "leaf" shape. The cut-off point
between these two designs was not exact i.e. you will find one or two B series
models with the old arrow hand.

In addition, there are a few pictures
floating about
, even in Panerai Historia, of power reserve models with the word
"Panerai" between 9 and the centre of the dial, and "Automatic"
between the centre and 3. The current theory is that these pictures are either
prototypes, or just art work, however if somebody actually has one of these
watches I'm sure we'd all be very interested to see a picture.

The A - C models all feature a power reserve indicator at 6, and large centre seconds, powered by an automatic Soprod calibre 9040 (basically a modified ETA movement).
The model then underwent a fairly radical design change for the D series. The
seconds hand is now a small-seconds at 9, like all other Luminor models, and
the power reserve indication at now at 4. The movement changed to be a modified
Valjoux OP IX. Despite the fact that
the PAM 57 theoretically only lasted for a year (replacing the PVD model, but
then being phased out in favour of the changed movement and dial arrangement)
there are a few D series PAM 57s
floating about, 55 pieces to be precise. How this came about I don't know; perhaps
a production overrun from the previous year? Still, however this anomaly occurred,
it makes for a scarce piece.

The E series (2002) was the "year of the power reserve". The line has been fleshed out completely, with a bracelet model, a left-hander's "destro", and 40mm models on both straps and bracelets.