van der Wateren No. 4, 2 Paisa red, error of colour In 1950/1951 by mistake the stamp of the 2 Paisa brown Oval “Pashupati” postcard was used for the envelope, thus producing the 2 Paisa red, error of colour (van der Wateren No. 4) The post office did not intend to sell these envelopes, having noticed the error In 1952 the stamp of the 2 Paisa red envelope was overprinted in Devanagari ATH PAISA (eight Paisa) Many varieties of this overprint exist: as in one word, inverted, double ... (van der Wateren No. 4a - 4d)