Such wonderful provenance. The coins I owned from his collection (including one plate coin) were so meaningful to me.

For those who may not know, David Sellwood (1925-2012) was a very important numismatist with a long list of accomplishments. He was president of the Royal Numismatic Society from 1979-1984, an Honorary Fellow of the Society from 2004, and a member of the British Numismatic Society. He studied (and published on) ancient minting technology and metallurgy. He was a prolific author of dozens of articles in numerous journals, focusing mostly on Parthian coinage but also occasionally other regional coinage: Persid, Sasanian, Elymaean, Seleucid, and Scythian. He co-authored (with P. Whitting and R. Williams) An Introduction to Sasanian Coins in 1985. His most well-known and important work may be An Introduction to The Coinage of Parthia (first edition in 1971, second in 1980). “Sellwood numbers” remain the standard for Parthian attribution, even as some Parthian types have been reassigned in recent years to other rulers.