A full triple gold automatic Piaget from 1974, all in beautifully original condition.  Model reference 13431.


From the serial number on the movement we can accurately date this watch to being made in 1974.


Piaget do not make cheap watches.  Piaget customers are well heeled, and often the price is not a consideration to them.  For example, the you could buy a new gold watch from them with a gold bracelet from their Altiplano thin watch line for £76,500, albeit with lots of diamonds (but the most basic thin gold auto with a croc strap will still start from £17,800!).  That this watch was made while the World struggled with the oil crisis shows that such things do not affect the wealthy nearly as much as they may do us!  Inside the gold case is Piaget’s in house 12PC1 movement.  This 30 jewel calibre has a microrotor made from 24k yellow gold to wind the watch automatically, but also has a calendar function.  One of the slimmest automatic movements ever made, it is also finished as you would expect a Piaget to be finished – beautifully.  It’s a shame you can’t see the movement, thanks to the heavy gold case back which has been machined from a single billet rather than pressed like most gold watches are.  The case does have some dinks on the crown side.  The dial has a rounded brick pattern running diagonally across it, matching the bracelet.  The dial is clean and original.  The fine mesh bracelet has a slight twist, which is quite common for integrated mesh bracelets, and is a decent length.  It has the original signed clasp.

This watch will be supplied with our branded presentation box and our Certificate of Authenticity.

This watch has been checked against the Watch Register and has not been reported as lost, stolen or implicated in fraud, and a copy of that certificate will also be included.

Please see the HD video for more detail.  All photos and videos are part of the description and are of the actual watch unless mentioned.  We do not photoshop any pictures, and the images are copyright of birthyearwatches.com and should not be used without permission.


Width with crown  33.5 mm

Width without crown  32.2 mm

Lug to lug length  30.5 mm

Case Thickness  5.6 mm

Bracelet will fit a maximum wrist size of 190 mm.  The bracelet can be sized for you if you give us your wrist size when placing the order.

All sizes are approximate.  The watch is photographed on a wrist of 190mm/7.5 inches.

Included with this watch is a 3 month guarantee and free delivery to UK addresses.  If you live outside the UK we can still deliver to most countries.  Please see our Worldwide Shipping information, or Contact Us.   Payment can be made by most credit or debit cards, bank transfer or PayPal.

From 1st September 2021 we will be planting a tree for every watch we sell, working with the International Tree Foundation (Est 1922) to make this business positive on carbon.  By buying anything pre owned you are effectively reusing what already exists, but this takes it further and makes us feel good.