Cayman Is 1912 a weak strike of Rural Post Collection boxed handstamp on cover

An OHMS cover to Olga parsons who had succeeded her Sister Gwendolyn as Secretary to the Board of Education in 1911. Its franked with two Farthing stamps and cancelled by the waggoner on its way to Georgetown where it was back stamped on the 2nd of April 1912. Ex Marston. Ex Booth