[cardsfan73]

Glad you do not have a lot invested in it. If it came from a collection with mainly 80's & 90's stuff that also included sigs of DiMaggio & Williams & McGwire (those three along with Mantle were the most commonly forged sigs at the time..) and there is no COA it more in likely product of the major forgery rings that were around at the time. A ton of fake signatures being sold through shop at home network and Smokeys Baseball Cards. Looks like a Greg Marino forgery to me. I hope I am wrong.