Im considering a 5513 MN, from what I can see searching the forum it would seem that the MN number is also stamped on the back of the
lug, thus linking the case back to the mid case. was this always the case or not??
O if anyone has one for sale I'd be interested:)
Thanks in advance
Ian

do you mean the year? Or the serial number?

As far as I was aware there is nothing to differentiate a MN 5513 from a normal 5513 other than the caseback just like the Tudor subs.

I've certainly seen them with just the caseback engraving and nothing else different...

Two I found on the forum MN68 number 003 case back but 003 also on the lug, also MN70 number 017 also with 017 on the lug

I guess they do then? I've seen them with just MN xx on the back and always been curious about them.

Maybe they are just later years ones....



but then this is supposed to be a 70?



as is this...




and these two MN70 number 015 both look different to me!!!



Have you asked Jeff, Ian? (Dr.Strong)

...if it can help...

But is this a military issued watch?

If not what is the purpose of the letters & numbers?

Regards

Tony

...used by the French Navy officiers.

It's not very clear though if they were issued for that purpose by Rolex or bought and engraved by the French Navy.