1706 Benjamin Franklin Natus Boston Medal. Obverse Shell. Copper. 46 mm. 181.7 grains. Type of Greenslet GM-33 to 35, 37, Betts 619, 620, Fuld FR.M.NL.3 to 5. Extremely Fine.A curiosity in this popular Franklin series, this shell is not listed in Greenslet or Fuld. Produced from obverse 1 in its rusty state before regrinding. Dominant medium brown patina with traces of light verdigris on the back that we mention solely for accuracy.From our (Stacks) sale of the John J. Ford, Jr. Collection, Part XIV, May 2006, lot 353. Ford acquired this piece from Joseph Levine on August 13, 1974. Lot tag included.