Could this be a HZ Sandman?

[adam perth]

I'd say this is the right placard for your Van assuming it is an XU3 Sandman. Also be aware that it is also correct for a 14.5cwt WB. So the lid may in fact be from a WB.

WB glove box lid would have different grain, latch and most likely colour to a 12/ 77 HZ lid

I think tyre placards are only helpful if the vehicle has been sitting around for 10 plus years, and you can tell its been untouched for all that time..