Where can I find the price of medallions Commerative Highland Mint?

I was looking through some of collectibles when I was youth and Kobe Bryant have a Highland Mint Commerative medallion. Son, 999 silver, totaling around 3000. He wondered if anyone knows where I can find a guide price or name the price guide to find collectables such. I have trouble finding any kind of information. Any help would be appreciated. The site mentioned in the first place, does not help. It has a list of all elements, more precisely, I am trying to find.

Jason, try this site: If http://www.beckett.com/Navigation/Controller.osi?Ntt=highland&Ntk=Interface1&Ntx=mode+matchall&N=0 still can not find what you want, search the help of collectors here: http://www.beckett.com/beckettforum/ Good luck.

NFL 2009 Team Force Photomint by Highland Mint – Vikings

RARE 1995 Highland Mint Roger Staubach Bronze Card +COA $99.99

RARE 1995 Highland Mint Johnny Unitas Bronze Card w COA $99.99

RARE 1995 Highland Mint Joe Namath Bronze Card w/ COA $99.99

RARE 1992 Highland Mint Joe Montana Bronze Card w/ COA $99.99

Damon Stoudamire BRONZE Highland Mint RC Card RAPTORS $9.99

2002 CHAMPION RED WINGS HIGHLAND MINT FRAMED PICTURE $85.00

2002 CHAMPION YZERMAN HIGHLAND MINT FRAMED PICTURE $95.00

Dave Justice Highland Mint BRONZE Card Atlanta Braves $9.99

Dambury Mint “Hitching a ride” West Highland Terriers $15.00

Randy Moss Highland Mint Framed Photo, Coin, and COA~~ $49.99

Highland Mint Silver Michael Jordan 1994 Card $87.00

Mike Schmidt 1974 Topps Highland Mint Bronze PHILLIES $8.88