Patek Philippe

Hi all

I was thinking of changing my 5056p strap back to a grey alligator one (its currently dark blue)

But cannot remember what the lug sizes are …would anyone know where to find this by any chance please ?

Also I was thinking of getting a pp clasp buckle for it. Would you know if the same clasp buckle would fit both my 5056p and also my 5120g?

Thanks

Kev