If the signatures are hand signed the value will vary from player to player. The autograph photos you have could be picture pack photos that feature facsimile signatures. Picture pack photos were a very popular souvenir sold at the Stadium, and came in a pack of about 12 photo's. As a complete set with Mantle and Maris it could be worth between $100. -$200. more with the original envelope.
it is worth about 250,000
it is worth a £10
About $40.
It is worth $15-20.
It is worth about $200.
Exactly of july 6 2012 it is worth 679.50 unautographed autographed it worth 3 times as much
nothing
about $150
$500
389$
$3,300
$1,000.