Hi, I have a postcard with Tiger Woods autograph from I believe 1998. It was given to me by a gentlemen that was a personal acquaintance of Tigers mother, both of whom are Thai. I immediately tucked it away for all these years and was wondering if I’m sitting on a sought after item. I can not find a signed postcard like this online only the 8x10 version. Any thoughts? Should I get it certified? Worth anything? Thank you.