In 1925 Albania released a series of stamps featuring then President Ahmed Zogu (later King Zog). This definitive series featured 2 designs in various denominations.
This series later was overprinted and surcharged and was in use from 1925 through 1929.
The standard perforation for this series is Perf 13.5, but I came across a few unlisted (in Scott) perforation varieties in this series.
First up is the 10q (Scott #191). Normal is on the left. The variety (Perf 13.5×11) is on the right.
This variety, not listed in Scott, is listed in Yvert as YT171c, and is valued roughly 15x higher than the normal perforation size.
The next example I have found is on the 10q with overprint (#200), and 10q with overprint and 15q surcharge (#240).
The standard perforation of this overprinted series is 13.5×13. The perforation variety is perf 11.5×11.5
The Michel Catalog lists the 200 variety as MiNr 154B and values it at approx $39. The 240 variety (surcharged 15q) is noted in Michel but not priced. MiNr 201
And finally, below are a few perforation “freaks” I have in my collection. These are Scott numbers 188 and 191.
The perforation varieties of early Albania stamps are plentiful, not just in this series but in many others as well.