Girard Perregaux - help with spotting a fake please?

[sidius]

Hi... can anyone tell me how to tell if a vintage Girard Perregaux is authentic or not?

These are the details on the sale:

1970's
GOLD HANDS
GOLD CROWN MARKED 'GP'
ACRYLIC CRYSTAL
PLAIN BEZEL
GIRARD PERREGAUX 17 JEWELS MANUAL WINDING MOVEMENT

There aren't any markings left on the back case from what i see in the pics.

Please could someone with the knowledge of this help me out?

Thank you kindly...
Sid

[sidius]

These are the best pics i've got - if they are of any assistance to this cause......

[Justayellowbadge]

Looks ok. You do see some horrors from India with refinished dials but that looks original.

It's a ladies watch Isn't it?

[mikeveal]

Yep, seems clean.
However, rule 1 of buying collecting 2nd hand watches - never buy anything without a movement picture.
I'm sure your wife / girlfriend / mistress will be thrilled.