You need to specify the year that the photo was taken. if its the 1982 Super Bowl XVII team, i would say you can ask for 2,500 - 56,000 USD. Just kidding i dont know anything about the value of an autographed photo.
$350.-$600 is the value of the whole team autographed photo signed by the 1966 world series orioles.
The value of an autographed leather Dream Team basketball is between $2,000-,$12,000. However, this will vary depending on its condition.
An autographed photo of a single team is selling for about $2000 on ebay. You do the math if you have both teams.
Many of the signed team photos are worth around $40 each. The exact amount will depend its condition and who all signed the picture.
Nothing, throw it away
I own a Small Sports Store in baltimore MD. Please send me a pic and I'll do my best to help you. Chris5041@aol.com