"Value" or "worth" are very subjective things when it comes to collectibles.
In my opinion, any collectible is worth whatever a willing seller and a willing buyer can agree on. And of course, it's worth will be affected by its condition, age, its rarity (are there similar items around, and if so, how many and how expensive are they?), how desirable is it, and how badly does someone else really want it, can Autographs be verified, etc. Since I'm not able to see the item, I really couldn't put a value on it, even if I were an expert in such things.
If you want to establish a value in order to sell it, you should probably consult a local Sports Memorabilia dealer (a local Baseball card shop owner may be able to refer you), or better yet, a sports memorabilia appraiser. The American Society of Appraisers has a website where you can get a list of appraisers in your area who specialize in sports memorabilia:
http://www.appraisers.org/
If you need an immediate estimate, check out similar listings on eBay. If you are a Cowboy fan and collect for the shear joy of ownership, then it really shouldn't matter what the item is worth.
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Dallas Cowboy Books Blog
http://www.facebook.com/DallasCowboyBooksBlo
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By the way, I collect Wheaties boxes and I've never seen a 1979 Staubach Wheaties box -- are you sure about the year?
No, he did not. Roger Staubach played for the Dallas Cowboys from 1969-1979.
Roger Staubach
Roger Staubach was the starter and Danny White was the backup.
Roger Staubach wore No. 12 from 1969 to 1979.
Staubach retired at the age of 39 because of numerous concussions that he had sustained throughout his career from 1969 to 1979.
The Washington Redskins on December 16, 1979.
Roger Staubach from 1977-1979 and Danny White from 1980-1987.
Craig Morten with Roger Staubach as back up. Roger Staubach with Morten as back up. Roger Staubach with Clint Longely as back up. RogerStaubach with Danny White as back up.
The cast of Health Field - 1979 includes: Frank Field as Himself - Host Roger Staubach as Himself - Guest
Yes. The Hall of Fame quarterback, who played for the Dallas Cowboys from 1969 to 1979, is a devout Roman Catholic.
Roger Staubach's record as Dallas Cowboys quarterback was 85-29 during his career, which ran from 1969 to 1979.
Roger Staubach is very successful in the capital / structured finance markets arena in the commercial real estate industry. He lives in Dallas, and recently sold his prestigious commercial real estate brokerage company, The Staubach Company (which he started while still the QB for the Cowboys), to Jones Lang Lasalle, though he kept the name rights, of course. He is chairman of the 2011 Superbowl Committee (to be held in the new Cowboy stadium) and is a community/philanthropic leader, a father, and grandfather.