I've met or written with foreign collectors Wesley Halpert (Spink sold his collection in New York in 2000), Gylfi Snorrason, Klaus Bronny, Wilfried Klug, David Holler, Kris van den Cruyce, René van den Hooff, Wolfgang Schuster, and John Hoag. Hao Zhai and Adrian Zhang, Beijing collectors, told me about acquiring Tibetan coins in China at the 2013 Rhodes collection auction in Hong Kong. We remain in touch.