U.S. Classics dealer Stanley Piller has passed away, according to posts online. He was elected earlier this year as president of the American Stamp Dealers Association. According to his Facebook page, he was born October 21, 1942.

A native of New York City, Piller was living in Contra Costa County, Calif., east of Oakland. According to his firm’s website, he had been a member of the APS since 1963 and of the ASDA since 1971. He began selling covers as a child, and purchased an existing stamp store in 1976. He had a masters degree in Chemical Engineering.

Piller was author of the book New York Postmaster’s Provisional and had written for philatelic periodicals such as Stamp Collector and Scott Stamp Monthly. He was also an expertizer for all three of the services.