In Peru, playing-cards were subject to a monopoly. They had a stamp, a sealing band, or they were marked in their printing.
It is not clear when this stamp was used. One assumption is that it was
around 1950, but it is more probable that it was around 1910 to 1920.
From 1924 to 1967, playing-cards were sold in Peru by the Estanco de Naipes del Perú. The cards were mostly imported, and the name of the monopoly was usually shown on the Ace of Spades, the Joker, or the box, and the logo often was on the back. Below is an example made by USPCC in 1948. The box additionally shows the retail price of 3.50 Soles Oro.
On his web page Estanco de Naipes del Perú, Simon Wintle gives information on playing-card tax legislation in Peru, and he shows a tax band used for playing-cards and several more imported packs of cards with the monopoly name or logo printed on them.