SPECIALS:
2L in 4-blocks mint, different wm:s 2L in block of 10, cancelled
Block of 4 of the 5 b green (137D), last printing on unwmkd paper, type I & II Reglet flaw + combined wmk PR + Line
Display of 5 bani blue wmk II & III Inverted Large Wmk, Cmpl block
10B green w dropped subject  (one stamp askew)  
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Perforations
15B violet perforated F(9 1/2)
- CMPR74 says that there exist 15B violet and 25B blue perf. F (only used)
canceled Doftana (1907) in blue ink (see scan) and also 50B cancelled Roman (1904).
Some say the perforation was made with an Austrian machine...
25 bani blue,Large Wmk, imperforated blocks
15 Bani violet imperf 4-block used Double perforation in the middle of pairs
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Double strike
10 Bani red, double print 10b red 1900 Unwmkd, Double Strike
10b red 1900 Unwmkd, Double Strike 15B red Double strike
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With white label inbetween
A display (including booklet)
24x5B Booklet      24x10B booklet   (these two courtesy: Bill Longley)
5B green, pair with white label inbetween
courtesy Razvan Pala
15B violet, pair with white label inbetween  
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25B blue error
25 Bani blue error, 1st setting
Block of 150, error in 1st setting
25 Bani blue error, 2nd setting
Cancelled block of 9, incl the error of colour, from the 2nd setting  
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1900, no wmk, 10 B orange
1900 printing, no wmk, Error of colour 10b orange