Description and research notes
Remainder variety of the interwar 10 Złotych listed as Pick 65br — the unnumbered remainder to Pick 65b — using the trial portrait watermark reading “Bolesław Chrobry 992–1025.”
Catalog context: the mass-issued type with the generic guilloche watermark is Pick 65a. Notes issued with the dated Chrobry portrait watermark are cataloged as Pick 65b and are scarce but documented. This piece shares the plates and paper of Pick 65b but was never serialed or released, hence its remainder status.
Background: in the mid-1920s Bank Polski tested portrait watermarks that fused anti-counterfeit work with national imagery. The Chrobry option was trialed, then largely set aside in favor of the guilloche watermark on the mass-issued 1926 notes.
Survival: 65br pieces typically trace to printer/bank remainder stocks dispersed long after production; certified populations are small, and higher-grade survivors are scarce.
Research value: as the remainder of Pick 65b, 65br is the key watermark study piece within the CM#64 family — documenting the short-lived portrait watermark concept and clarifying the split between 65a (guilloche) and 65b/65br (Chrobry).