Jal Manekji Cooper, born on 29 March 1905, in Mumbai, was an Indian philatelist, and
an expert and authenticator of the postage stamps and postal history of India.
Cooper was also a Fellow of the Royal Geographical Society and the author
of several philatelic handbooks. He was both a stamp dealer and a
collector and was associated with philatelists like C.D. Desai, N. D.
Cooper, and Robson Lowe.
Cooper is
occasionally but erroneously credited with having discovered the Inverted Head
4 Annas.
The 1891 reprints
show that this error was already known. E. A. Smythies said the error was first
discovered at a meeting of the Philatelic Society of London in 1874.
The Jal Cooper Philatelic Society, in Varanasi, India, is named after him and India Post issued a 10 rupees commemorative stamp in 1997 depicting Cooper and Indian postmarks, on the occasion of INDEPEX 97.