CHT259957 Trade Union Banner urging the Proletarians of All Countries to Unite (painted silk) by Swiss School, (19th Century); Private Collection; (add.info.: Proletariens de Tous les Pays, Unissez-vous; Proletarier Aller Laender, Vereinigt Euch; banniere syndicale Suisse; main de prisonnier tenant un foulard rouge; hand of a prisoner holding a red scarf;); 穢 Archives Charmet; Swiss, out of copyright.