Legendary posted plenty of large scans for less valuable lots. I won a lot of 7 inexpensive Conlon photos that had huge scans of both fronts and backs:
Conlon photos
I was also interested in this very large premium that I thought would go for around $1,500, but it baffled me that the scan posted was so small. Because of this, I assumed they were hiding something:
1904 Pittsburg supplement
My choice was simple: either bid on the supplement expecting the worst-case scenario, or ASK FOR A LARGER SCAN. I was lazy, but I bid low. It turned out that the scan hid some restoration of the item (description:
EX/MT appearance with a single fold at center and minor creasing.), but it also hid the quality of the supplement and the frame-job. I luckily did better than expected, but it was pure luck.
David, I think Legendary should have provided larger scans AND described the pinholes, but they didn't, so you should have bid expecting the worst-case-scenario, or asked for larger scans. The fact that the scans were so small should have been a red flag.
Edited to add: The fact that these were in '1' holders also bit you, since '1' includes almost any kind of damage. I once won a holdered 'NM' T206 from Legendary, that had a dot of paper loss. Prior to paying, I was told about it by a fellow board member, so I called Doug Allen and he took it off my invoice immediately.