1834 Sunday School Society EL with PAID AT / SLIGO

1834 Printed wrapper of the Sunday School Society used December 9th from Dublin to Sligo, pre-paid with manuscript "2" in red, turned and sent back to Dublin on December 12th, again with manuscript "2" in red and with very fine and clear small boxed PAID AT / SLIGO (dented frame at right).
A very early use of this "Paid" strike on a double use per the Charities Rate uintroduced in 1832.