The present bill is, in our opinion, a counterfeit of the era, from an advanced forgery workshop, which successfully escaped circulation as an original. Even today, opinions on its unequivocal classification are divided due to the rather significant degree of circulation wear.
Factors in our opinion in favor of the forgery are the general perception of the portrait, where the depiction of Kosciuszko's face deviates somewhat in general perception from that of the undeniably original pieces. Virtually invisible watermark. Imperfections from the fine details of the drawing, as well as the numerator. In the numerator omitting the unevenness of the digits a hint of their different features, e.g. curling of the digits 2, or 3. Noticeable imperfections from the typeface of small fonts, e.g. the letter S, in the clause "ARE LEGAL...". etc.
