my favourite aftershave

I've had this bottle of aftershave for twenty years but, sadly, it'll run out soon. [The fact it hasn't shows how often I use aftershave.] Spent years trying to replace it, without success. Have tried more recent Lanvin aftershaves, just not the same.

No doubt it's pointless even asking, but does anyone know where I might find some more of this? The serial number is 748313, and on the bottom of the box there's a code: L801742B.