Here is an 8 x 10 photo of the former, Baltimore Colts lineman - Gino Marchetti - that has been signed by Marchetti.  This item does not have a COA, but please check the other, Marchetti photo I have listed that has been certified by Tri-Star Productions and compare this signature for your own verification.  This item has been signed in blue ink - "Gino Marchetti" - at lower left corner with signature being clean and typical.  Photo is clean with light wear.  Please use the zoom feature for an up close view of this item.  I combine shipping when possible.  Thanks - Howie