The author of this blog " Philcovex" was Andrew J. Liptak
( 1948-2014). On May 23rd, 2019, SPARKS AUCTIONS will hold an online auction of his postal history and FDC's of The Netherlands, including 2 padvinder covers and 2 Court of Justice covers, as well as material from GB George VI, India, US, Hungary, Europa, Philippines and more. You can find this sale at (lots 601 to 999)

The Netherlands Postal History site deals with all aspects of Dutch postal history from 1924 to 1946.
Please contact me at if you have any questions or comments.