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

MARIO LEMIEUX HIGHLAND MINT NICKLE NO.1557 WITH CASE $5.99

Drew Bledsoe Bronze highland mint coin w/ COA $0.99

2 Barry Sanders Bronze Coins Highland Mint $9.99

Steve Yzerman Highland mint coin $14.99

1994 MICHAEL JORDAN HIGHLAND MINT BRONZE #/5000 $14.99

Highland Mint Dan Marino Nickel Coin Limited Ed.10949 $0.99

DREW BLEDSOE HIGHLANDS MINT COIN MINT IN BOX W/COA $9.99

ORIG MINT TEEN 45~ROSIE & ORIGINALS~ANGEL BABY~HIGHLAND $19.99

Joe Montana Highland Mint Autograph Coins SF 49ers #/99 $174.99

CAL RIPKEN, JR.-HIGHLAND MINT.999 SILVER 1oz. MEDAL MLB $49.99

Amazing Fantasy 15!! HIGHLAND MINT Bronze Card! $89.95

The X-men #1!! HIGHLAND MINT Bronze Card!! $59.95