Is it rare? Tips for identifying rare 78rpm records. (...and a genuinely rare Champion record)

Recently in the comments, a viewer asked me how I knew that some of my discs were genuinely rare. That is a GREAT question, so I decided to pass along a few things to check when determining whether or not a recording is rare. Columbia 13/14,000 series discography giveaway link: (Giveaway window is now closed: See the next episode to find out who our winner is) The rules are simple, you just need to click the link, put in your name (real or fake), enter your email (so I can contact the winner) and check the very basic rules. You do NOT need to sign up for ANYTHING. I will DELETE ALL INFORMATION (names, emails, etc...) after a winner is chosen. I will NOT email you (unless you win) or provide your email to anyone else. The 78rpm channel will even cover media mail shipping! It's just a small "thank you" from the channel. LEGAL-ish stuff: US/DC, 18+. No purchase necessary. Ends 10/12/26 11:59 PM ET. Random winner. Not sponsored, endorsed, or administered by YouTube. Winner will be notified by email and must respond in 48 hours. Here is a link to the full recording of the Champion disc from the video. It's currently available on The 78RPM Station: https://youtu.be/lPCIBivLcvQ?si=zFdQXRDzA-onezHt Columbia 15,000 series discography, complete with sales figures by researcher Cary Ginell: https://www.lulu.com/shop/cary-ginell/the-columbia-15000-d-series-discography-1924-1933/paperback/product-4gnm56.html?page=1&pageSize=4