I wouldn't say they are more sort after, just more desirable in determining whether or not you’re Holden panel van is an official Sandman. If you know what features to look for as this site respectfully sets out, then finding an official Sandman without the XX7 stamped on the ID plate is in my opinion just as valuable as a stamped XX7 one. But if all Sandman’s we're stamped with the XX7 on the ID plate, it would make identifying one ALOT easer...! :D

I own an original one owner 1974 HJ Holden Sandman and even though it hasn't got the XX7 stamped on the ID plate, it does have all the features a HJ Sandman came out with at the time. I have the original books that came with it such as the owner’s manual etc, and the owner who it was bought from confirmed that he bought it as a Sandman from the factory. I just don't have the XX7 stamped on it since it's an Adelaide based Sandman.

But in my opinion an XX7 Sandman isn't worth more... But I'm sure there are guys out there that disagree... ;)