Keywords: A Jacques LeGrand (Calvet M. Hahn 2000 Intertwining Part 2 Image 3)2.png en Dr A Jacques LeGrand 1820-1912 one of the first stamp collectors in France entered philately through his nine-year old son in 1862 published a key article on watermarks in 1866 under the pseudonym of Dr Magnus proposed the first perforation gauge which he canned an odontometre in October 1866 http //nystamp org/Intertwining 20Part 202 20Image 203 jpg An old picture from http //nystamp org/Intertwining 20Part 201 html 'Intertwining of Philatelic and Social History' by Calvet M Hahn 2007-11-15 Unknown; processed and uploaded by Michael Romanov thumb left 100px PD-old Jacques Legrand |