ABUS 88/40 Stainless Brass Lock with 2 Keys for Outdoor, Storage, Gate, 1.58in (40mm) Wide (Keyed Different, 1)

Can’t say I’ve ever heard of an “N 88/40”. Maybe you mean some have a “No” stamp on the body in front of the 88/40? Just a cosmetic difference as far as I know. Here is a typical 88/40 on Amazon: https://a.co/d/04zrxClh I got butterflies from this one, but of course you are rolling the dice so not guaranteed. Good luck!