These two stamps (Scott #1 and #6) are perforated 10.5 x 10.5. Scott only lists them as perf 11.5 and imperforate.

Here is a perf 11, which is what the all the others in my collection are listed as.

Do other catalogs list different perforations or could they be forgeries? Any information is appreciated!
More on Central Lithuania stamps:
https://goscf.com/t/17977#17977