A Little Assistance Please?

[Frank Good]

Not sure if this is the right place to post but I have a few questions regarding a Parker VH 12ga I have come across for sale. I'll post the pics the fellow has from his ad and add that I have seen and handled the gun in person and it is nicer in hand than the pictures. The action is so smooth it's as if it's on bearings. Lock up is tight, so smooth and almost effortless. Makes my Ithaca NID 4E feel like an old Winchester Ranger single...LOL

Ok first off, how to determine year? Serial # I am guessing?
Second it would appear the gun has been restocked and the recoil pad questionable as to period correct?
The forend appears to be original. Barrels and trigger guard look to me like a reblue?
Now price....to state these are CANADIAN prices, I live in Alberta and the gun is in Saskatchewan. The used gun market is different between our countries on values and currently the market in Canada is very soft, especially on old double guns and anything old not high grade or target grade.

At our recent gun show he had it tagged at $1895 and has now dropped his price to $1700 shipping included. That works out in US dollars $1263.44 US.

The gun has 30"bbls but no mention of chokes, barrel steel type or any other info in the ad. Aside from these obvious questions what other questions should I be asking?