Gohelm, Welcome to Ribnet! :hi!
Looks like an older indespension - the snubber post looks like one of the earlier designs, (although I have got a Snipe snubber on a West Mersea trailer, so don't use it as a 100% ID!)
The sticker won't be on the axle (nobody can see it there!), probably nearer the front at the bit where the side rails bend in towards the hitch?
Could phone / mail them your pic.