Hi,
Just finished checking 1300 cancelled copies of the Pachina Point Lighthouse permanent stamp (house to the left), Unitrade no. 2253.
I was able to pair 136 flaws, two copies or more each. Most are small dots or specks. However, a few are more obvious. For interested members, they are shown below:

Blue dot above flag, edge of top selvedge - found 3 copies

Yellow mark on white part of lighthouse - found 5 copies

Red scratch lower right corner - found 7 copies

Kiss print of red maple leaf and bar - 52 copies found
Numerous red marks have been found near and/or on the flag. However no macht were found.