Get experienced opinion when buying a van pre 1985 or any van, for that matter.

Suggest an electrician, familiar with double pole, inspect circuit. 

Folder with product specs and certificates for plumbing and electrical, good start.

General cleanliness, care and a non musty scent is welcome.

Amateur attempts of fixing leaks and cover ups indicate further consideration.

Van may appear a good buy but could turn sour cost wise quickly, this is where some one with experience can help.

Roll out awning, material hardness indicates age, not cheap to replace and not all insurance policies are friendly with an aged product.

An older van without an air conditioner can be a blessing, cheaper option around now from new.

Same with hot water services, ask when the Suburban anode was changed last, doesn't know would be a problem.

Understand gas, electricity and plumbing, ask if not sure, but don't risk you and your family.

This list can go on and on and others may wish to contribute, even at a caravan yard that didn't sell lpg regulators suggested buying any regulator a lot cheaper than those your after, indicating no knowledge of high flow protection.

Carbon monoxide, water pressure reducers, double pole switching, not double outlets!! and earth leakage protection, not called that these days, are issues around safety, let alone cosmetic differences that seriously need to be considered. 

So enjoy your choice but beware, they are very fragile and the more modern van, improvements of the past more evident.