Give us an auction number...you'll get plenty of feedback.

To me...key elements:

All matching serial numbers?
Any cracks in wood?
No drill and tap for a scope?
Condition of bore?
No re-finish on wood?
No re-blue?
No sling swivels added?
Serial number? (pre WWII is my inclination)

Caliber is always posted...personal favorites are .250-3000 and .30-.30 Next would be a 22 HiPower... .300 would have to be unique and have some special interest to me (serial number)
.303 would have be in radically good condition or unique model...saddle ring for example...or octagon barrel...

If a seller will not answer those questions...I'm out.

Right answers to all those questions...then it's pictures of gun (how clean or beat up is the wood and metal...verses a reasonable prce...) and seller's feedback...

My 2 cents!