Is it for real?

[Swanny]

Hi all, I brought a 6/76 HJ panelvan about 10-12 years ago that was last registered in 1986. It had been sitting under a house since then before I got my hands on it. I've had it in storage ever since and never really thought it could be a Sandman until recently. I've talked to a few different people who have Samdmans and there sure it is but I'd like you fellas to have a look.
The ID tags are:
HJ PANEL VAN
6/76 BHJ 60XXXXX
GVM 1950 SEATING CAP 2

8M70TFHXXXXXXX

MODEL HJ8WXXX
BODY 194XXX-A
TRIM 1916-19V
PAINT 568-17777
Eng L31 Trans M21 Axle GV4