Based on a draft received from the Tibetan government, the famous British printing house Waterlow & Sons prepared a few essays and sent them to the Tibetan government for approval. All these essays had been in the nomination of 1 Karmanga, printed in various colours. However, most likely due to financial reasons, Waterlow & Sons did not receive the order to print the stamps of Tibet; however, they had been printed in Tibet in the traditional printing way. These so-called Waterlow Essays as they are no called are very rare and only a few are known.  

Waterfall mentions in his Tibet handbook that some of the Waterlow Essays show part of the Watermark “Jas. Wrigley and Son Ltd“., without giving details which ones are known with and without watermark.