AI Appraisal Estimate

This is a contemporary Kansas City Chiefs Riddell Speed mini helmet featuring an authentic autograph by guard Mike Caliendo. The helmet is constructed of heavy-duty red plastic with a high-gloss finish, accented by a white three-bar face mask and a white chin strap. It prominently displays the iconic Kansas City Chiefs arrowhead logo decal on both sides. The autograph is executed in bold black felt-tip permanent marker, positioned on the top-rear crown of the shell for maximum visibility. The helmet measures approximately 5 inches in height and 6 inches in length, characteristic of the 'Speed' style design used by current NFL players. It is housed in its original clear plastic clamshell display packaging with the original Riddell branding and green NFL 'Mini Helmet' insert card. The item overall appears in mint condition; the signature is sharp without fading or smearing, and the exterior shell maintains its factory luster with no visible scuffs or impact marks. As Mike Caliendo joined the Chiefs as an undrafted free agent in 2022 and was part of the Super Bowl LVII and LVIII championship rosters, this piece represents a modern era of franchise success. The craftsmanship of the Riddell Speed series provides a high-quality, scaled-down replica of the official on-field equipment, making it a desirable piece for sports memorabilia enthusiasts and Chiefs collectors.

I have conducted a visual examination of the Mike Caliendo autographed Kansas City Chiefs Riddell Speed mini helmet. The item appears to be in mint condition, featuring a high-gloss finish and a bold, legible signature. Caliendo's role as an offensive lineman and recent Super Bowl champion adds niche appeal, though offensive linemen typically command lower market premiums than skill positions. The market for current Chiefs memorabilia remains robust due to the franchise's ongoing success, but Caliendo is not yet a marquee name. Comparables for signed mini helmets of roster-depth players in the current market range between $35 and $75, depending on the presence of a reputable Third-Party Authenticator (TPA) sticker. A significant factor impacting this value is the lack of a COA from a major firm like JSA, PSA/DNA, or Beckett. My assessment is based solely on high-resolution images; for a definitive hallmarked valuation, I would require an in-person physical inspection to verify the ink's depth and stroke characteristics. I recommend the owner obtain a TPA certification to maximize liquidity and verify the provenance and authenticity of the signature, as image analysis cannot definitively rule out high-quality reproductions or autopen signatures.