Card Identification Forum

I know Bowman/Topps would insert these previously signed Under Armour cards into Bowman Draft products once a player had gone pro, but I don't think Corbin Martin's was ever officially released, so I am guessing this may have been a "back-doored" card.  I purchased it off eBay years ago, and have not seen another in existence.  I thought maybe Topps would include it with the 2017 Bowman Draft release when Corbin Martin's draft cards were included, but that time has sense come and gone.  Any help would be appreciated even if it is just a confirmation of this card not being an official release.  

I don't think this was a forgery.  The back of the card includes the official "The signing of all Topps autograph cards is witnessed by a Topps representative to guarantee authenticity", and the signature does appear to match Corbin's autograph.

It would've been around 2017, maybe 2018, but unfortunately the only source for finding out which sets the autographed cards were released in has been Cardboard Connection.

Here's what we have so far from that 2013 game:

1 Dylan Cease = 2017 Bowman Chrome, SN199
5 Michael Gettys = 2015 Bowman, SN200
6 Nick Gordon = 2014 Bowman Draft, SN199
7 Foster Griffin = 2014 Bowman Draft, SN199
8 Grant Holmes = 2014 Bowman Chrome, SN225
9 Michael Kopech = 2017 Bowman Chrome, SN199
15 Carson Sands = 2015 Bowman, SN200
16 Touki Toussaint = 2015 Bowman, SN200
17 Chase Vallot = 2015 Bowman, SN200
18 Alex Verdugo = 2015 Bowman, SN200

It's also possible it was released much later. For example, Luken Baker was in the 2014 game but his autograph was in 2022 Bowman.

Would it possibly belong in this checklist?

2014 Bowman Draft - Under Armour All-America Game Autographs Baseball Checklist | Trading Card Database (tcdb.com)

He wasn't drafted until 2017, so he couldn't have appeared before then

I bought it before 2017 Bowman Draft came out.  Not sure exactly when, but it may have been late 2016 or early 2017.  I remember anticipating the 2017 Bowman Draft release thinking I may seem more of these appear, but that never happened.

It does match the 2013 base set that was released for the All-America game: https://www.ebay.com/itm/323648349328?hash=item4b5af1e490:g:LcwAAMXQqWNSH37K&amdata=enc%3AAQAIAAAA8FVyTWPHol1HkBfXOqxquvh1pjnJxF5naCFmQvhU4ti9pQCZiU%2BAGHypuILMOVMMpvYF1CorsXijIGzFy72uNmTwBnzwxQ2rF3A%2BBIEKi8sNenB8rOvaEEqD63rxsB7oZ972OzjcRG8etJs%2B95wQ9CSkH4Vs%2FpqccZoBOULY1beuPtbWYNdlwm%2BeICHnCzriUdxCNT1cX4Kqzgm26DwiZrqg0ChGDl2c8Rd%2F2HklbvDLCBBxSQndEjiy3gONrHkITf3AMRPNsgfbhlTxDLbqMgQ%2FQG7GD%2BvhAcgf1dFiJTKpdB%2BjXfn54qzluFb1gq9rog%3D%3D%7Ctkp%3ABk9SR4zFxtTHYg

And also matches the later Auto releases from this set as far as the "Topps Certified" language goes except it does not have a SN: https://www.ebay.com/itm/134589965462?hash=item1f562fe496:g:D3MAAOSwQJZkdA8k&amdata=enc%3AAQAIAAAA0MWyLTyFFSYg4NYop1%2BtFmZIntFwHf%2FDWwRxA5CRPAN7Bd2KHIEsrHPo67l8S0fT5TxbMOVU91kCfYk%2Fuo9sNXKcvpi34jF3CtJcft3jjVoepHVpSYaUzJNKL%2BvAzPGJa5a8sXwvroUKE%2BUb6B8IEqm4QvVYvArgmZqVApDHTKELGRfh6pQlQMiXRc8o4WPgbX5L04RQqM204rDNYnu0bDx5w4rEXP1TNXTqOogjt9R2oaE92FFU3ucbDwpdnUhnhEZ0ywXgCfrxKGFCtKKM8rI%3D%7Ctkp%3ABk9SR4zFxtTHYg 

I spent a decent amount of time cleaning these up, so the earlier sets are locked to prevent entries where they don't belong (and we still have issues with users uploading autographed versions to the original unsigned sets). If you search for "bowman under armour autographs", you'll see game years can be mixed throughout the Bowman/Chrome/Draft releases, but they generally keep SNs around the same each time, so since this Martin doesn't have an SN, it would've likely appeared in a release where the cards weren't serial numbered, which would eliminate 2017 Bowman, which were all SN199.