100 PLZ

Security features: microprint,intaglio

This is a specimen/propaganda overprint of a Polish 100 złotych note from 1988 (Pick 143e), near the end of the communist People's Republic of Poland era (1952–1989). The base note belongs to the 1986–1988 series of the fourth złoty (1950–1994), which suffered severe hyperinflation in the late 1980s. The red diagonal overprint 'PROLETARYAT ORGAN MIEDZZYNARODOWEJ SOCYALNO-REVOLUCYJNEJ PARTYI' (Proletariat Organ of the International Social-Revolutionary Party) suggests this was a propaganda piece or commemorative overprint, possibly related to historical Polish socialist movements of the late 19th/early 20th century. The Proletariat party was a Polish socialist organization active 1882–1886. The actual back image, however, shows a modern 2012-dated 100 złotych note (redenominated new złoty, PLN), creating a temporal mismatch—the front appears to be the 1988 series with propaganda overprint, while the back is from the current Polish series introduced in 1994 and redesigned through 2012. This indicates mismatched images or a composite specimen. The 1988-series 100 złotych was demonetized when Poland redenominated 10,000:1 in 1995, replacing the old złoty (PLZ) with new złoty (PLN).