While I've only been a member of this Forum for a couple months, I've seen numerous requests for help to provide valuations for collections. Frankly, it is fairly impossible to render any accurate estimation of stamp values simply by looking at an album cover and a couple pages.
Most experienced stamp collectors suggest the following ways to get a better idea as to the value of an
inherited collection:
1. Visit a reputable stamp dealer and ask for an educated appraisal; consider having the collection sold on consignment -- it could be worth the percentage paid to the dealer.
2. Do your own research -- Gain access to stamp pricing catalogs for the country stamps in the collection and look for stamps collected on the older pages -- stamp catalogs are available at public libraries and on auctions and
Amazon new and used. Who knows, you may decide to start collecting yourself!
3. Post as an auction item online -- Prepare good quality scans of the oldest album pages, describe number of stamps, countries, and ages covered; on
ebay you'll have to accept whatever the buyers offer.