Lot
686 
Leavitt Machine, "Boston Mass.", Type X3A, Die A with 17 bar canceller having a 6mm. channel, ties 1¢ gray blue (206) on third-class fancy "Raymond's Vacation Excursions" corner card cover to Belfast Me., corner card; no flap, F.-V.F. and scarce. Estimate $150 - 200.
The Boston Leavitt Type X3A is known used only from September 1882.