France 1793 - Domaines Nationaux Assignat 10 Sous Block 305, Watermark RF/Xs (Pick A68b)
Technical features include the 1793 date line (Loi du 23 Mai 1793), 'Série 305' (Block 305), the manuscript signature 'Guyon', and a dedicated watermark reading 'RF' above the denomination-here 'Xs' for 10 sous (one sous = one sol; 20 sols = 1 livre). The combination of watermark, embossing, and legal threats reflects the regime’s push to deter pervasive counterfeiting. Read more →