Welcome to my website!
My name is Jon Warren. I have been collecting, appraising, and writing about collectibles since 1975.

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I buy and sell coins and collectibles through my company, 2nd Markets (www.2ndMarkets.com). We buy, sell and appraise antiques, art, coins, old currency, knives, movie memorabilia, rare comic books, vintage collectibles, and memorabilia of all kinds. I have been buying and selling since the 1970s, BEFORE there was an Internet!

Nowadays, the best way to learn the true market value of collectibles is on the Internet, using an online appraisal site. My favorite is IGUIDE.NET

I find it to be ne of my favorite resources for collector pricing information and collectibles appraisals. Visit iGuide.net

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Seller Reviews


Read what hundreds of happy sellers have to say about selling to me.

  • Kristin Papanek

    Media, Pennsylvania 

    2ndmarkets.com was great to work with. I received much higher on my items than anywhere local. They had great communication and paid me the day they received my items in the mail!

    Jesse Schrote

    Dayton, Ohio 

    Jon and team have been amazing to deal with beginning to end. The entire process was effortless and communication was top notch. 10/10 would recommend and would definitely do business with them again.

    Evan McLean

    Atlanta, Georgia 

    Jon and the team at 2ndMarkets.com are a wonderful group of people to work with. Not only are they extremely responsive, they are very easy to work with and the prices they offered for me items were very favorable. Once we agreed on the price, they promptly sent out emails with clear instructions on how to properly and safely pack my items as well as a link to generate a pre-paid FedEx label. My items were delivered on a Wednesday after lunch and I received payment via Zelle not even 3 hours later! Extremely professional and top-notch company that I highly recommend.

    Rosaura M.

    New Vernon, New Jersey 

    2nd Market has been nothing but professional. Trusted buyers for your items. Was very satisfied with how smooth the transaction went. Fair price, easy shipping and fast payment. Thank you so much.

    Joe Otlewski

    Commerce Twp, Michigan 

    This is an online business you can trust. Within 72 hours of my contact with them my package was sent and received. My money was sent to my bank account within an hour. This is a great company that I’d have no problems doing business with in the future.

    Todd Young

    Audobon, Pennsylvania 

    I appreciated the level of communication and clear instructions. Jon is knowledgeable and reasonable. I would easily do business with him again.

    Thomas Harman

    Martinsburg, West Virginia 

    2nd Markets is easy to work with. We settled on a fair price, and Jon sent the payment promptly. I'd do business with the company again.

    Christina Guerrero

    Orange, California 

    I can't thank 2nd Markets enough for absolutely everything. They replied to my initial inquiry within 48 hours and from there the transaction was complete within 7 days (weekend included). Communication was great and they answered all my questions and addressed all of my concerns. Will most definitely be referring them and using them again should the opportunity arise.

    Lillian Glasgow

    Parker, Colorado 

    Everything was explained clearly to me. Jon was easy to work with. Payment was promptly paid. Very satisfied.

    Angelo Boer

    Catonsville, Maryland 

    My second time around was as great as the first. Simple, Processional, Communicative. You made the total process quick and easy.