2007 Grandstand Southern League Top Prospect Justin Upton (In-Person Autograph)
Justin Upton · Grandstand (Licensed Minor League Producer) · Minor League / Autographed (After-market)
Player
Justin Upton
Set
2007 Grandstand Southern League Top Prospect
Year
2007
Card #
N/A
Condition Grade
Estimated PSA 6 (EX-MT) - Centering is bottom-heavy, corners show visible wear, and surface likely has minor handling marks from the signature process.
Category
Minor League / Autographed (After-market)
Manufacturer
Grandstand (Licensed Minor League Producer)
Demand Level
Low to Moderate - Upton had a stellar career with over 300 home runs, but minor league cards and uncertified autographs typically have a niche collector base compared to MLB-licensed rookie cards.
Valuation
Raw (Ungraded) Value
$5.00 - $15.00
Graded Value
PSA 8: $25-40, PSA 9: $50-70, PSA 10 (Rare for set): $120+
Comparable Sales
Raw base versions of this card sell for $1-$3. Certified pack-pulled autographs of Upton from 2007 Bowman/Topps sell for $40-$80. In-person signatures on minor league cards generally settle in the $10-$20 range due to the lack of a certificate of authenticity.
Description
This 2007 Grandstand Southern League Top Prospect card features a young Justin Upton in his Mobile BayBears uniform. The card has a blue ink signature across the center. The design features a baseball stitch motif on the left side and the Southern League official logo in the bottom corner.
Key Features
Early career 'Top Prospect' card from his time in the Diamondbacks minor league system; Features a hand-signed blue ink autograph.
Authenticity Indicators
The signature matches Justin Upton's known early-career autograph style. The card stock and semi-gloss finish are consistent with Grandstand's 2007 production. Confidence: High on card, Medium on signature without COA.
Flaws to Note
Visible whitening on the corners and edges; centering is significantly off towards the bottom edge; signature is an 'In-Person' autograph (not manufacturer certified), which requires third-party authentication (PSA/DNA or JSA) to hold maximum value.
Selling Guide
Where to Sell
eBay is the best platform for this card, utilizing a low starting bid or a 'Buy It Now' with 'Best Offer' enabled. Facebook sports card groups dedicated to the Diamondbacks or Minor League cards are also viable.
Selling Tips
Do not grade just the card; if anything, send it to PSA for 'Dual Authentication' (card and auto), though the cost may exceed the card's value. When listing, clearly state the autograph was obtained in-person and provide clear photos of the corners.