Images courtesy of Stack's
In the February 2005 issue of NUMISMATIST (page 63), William Anton offered
a Willow Tree Shilling for $750,000.00, describing it as follows:
"Full round planchet, size of a half dollar, fully struck up Willow
Tree, full complete struck up date and with no defects whatsoever.
Super Gem Uncirculated."
"The Silver Coinage of
Massachusetts" by Sydney P. Noe (out of print)