CAS is pleased to announce

Our Upcoming Events
For 2017


SEE ALL EVENTS



Join us for The Philly Show
December 1st - December 3rd, 2017

Friday 3:00pm-8:00pm Saturday 9:00am-5:00pm Sunday 10:00am-4:00pm

Valley Forge Convention Center - 1160 First Ave, King Of Prussia, PA
  • Our Services

  • About Us

  • Verify Your Item

Services ofCertified Authentication Service

  • Primary Certifications

    This service is used for most items valued under $300 and includes a 2 ½” x 2 ½” certification card with a matching tamper proof sticker on your item

    View_more
  • Item Submission

    Have items to submit to CAS for authentication? You can ship your items to us, visit our office, catch us at a show, and we even make house calls!

    View_more
  • One-Step Verification

    You authenticated item will have a unique alphanumeric sticker that matches your certificate. Click below to verify your item with our database...

    View_more

Client TestimonialsWhat Our Clients Are Saying

  • "Over the past 5 yrs using Mike Root as an authenticator I found him to be 100 percent Honest, fair and accurate with his services. 
    He has always been very responsive and price-conscious to my needs
    as a customer.
    Thank you Mike for coming back!"

    Jack Probstein
     
    read more
  • "We have known Mike for many years and relied on his expertise & integrity in authenticating autographs of both vintage and current day athletes as well as celebrities. We have used LOA's and COA's provided by Mr. Root in our auctions & sales and have never had a problem with his work."

    Lou & John
    Inside the Park Collectibles
    read more