how do i tell plz help ????

[Absinth]

Sounds like a Sandman shell with rails replaced with earlier ute or van rails as a result of the smash.

HQ lost the vents around 5/74.

I know what the numbers come from by 30 years of ID collecting!

I doubt it has ever been a Sandman. It has no black outs along the the sills and rear beaver and no sign of them ever being blacked out. Weight printed on side is more a commercial thing and unlikely to be found on a Sandman. Been done up at some stage to look like a Sandman.