The 10 zloty denomination was probably issued in two issues. The first, basic one consisting of the A, B, C and D series was probably a large issue, hence the banknotes from these series are the basic ones available for the denomination of 10 zlotys.
The second issue(?) (possibly supplementary(?), dictated by the provision of a sufficient amount of money for circulation) was already realized in only two, consecutively falling series: E and F. Both of these series are disproportionately rarer compared to the first four. Single pieces of 10s of the E or F series appear very sporadically. The OneBid archive shows with a simple query only 11 F-series and 5 E-series listings!
A very nicely preserved piece.
Fully natural. Paper firm, not tired from circulation and with noticeable, distinctive texture. Light spotting at the top; a few folds but not strong; more pronounced is the central half-fold; its spine without rubbing, and at its confluence with the right margin a single, insignificant tear, below which another, tiny one. Other than that, no comments. Excellent.
Banknote discussed and presented in the attached, collectible on video.