The photo of the Hummingbird from Soldier Field Chicago shows enough unique details on that guitar to normally compare with a pic showing his early Bird, but finding a good photo from that era is a tall task. If we could find a better photo from the mid '60's we could look for what's shown in the above post #1: the two light areas of spruce grain running down from where the wings of the bridge taper down, the flat edged areas of cherry burst out from the center seam on the treb side of the lower