Greece Scott #326 Vs. #364

Does anyone have a side by side comparison photo of these 2 stamps between the Scott listed violet or dark violet? Perhaps it is not the colour that it is the true differentiator, but the perforations instead.

Thank you. Based on this information I have 1 Type II and several Type I. However, the one type II that I have has a 12.5 x 12.5 perf. measurement which is not one of the Scott listed values for #364.

Actually now that I am checking all of the Type I stamps they seem to have a variety of different perforations. What is the actual perforation of #326 supposed to be or can it be any of the 6 Scott listed values?

LastDodo (a very unreliable site) mentions the 50 lepta stamp of 1927 having 13:12½ and line 13 perforation. It would suggest there exist perforation varieties. Then again, it is LastDodo.

Personally, I think it may be any of the 6 perforation varieties listed as I also have found perf variety. It does note in Scott - issue of 1927 re-engraved. 50 l, Design is clearer, especially "50" and the 10 letters.
Size in mm is given : 50 l, 1927, 18x24 3/4. 1933, 18 1/2 × 24 1/2. Hope that helps.