1890 PENNY POST OFFICE JUBILEE 1D BLUE ENVELOPE 'TRUMPINGTON.ST/CAMBRIDGE' DATE STAMP. Good example, very minor soiling,of the 1890 POST OFFICE JUBILEE 1d blue envelope with insert, envelope cancelled fine strike 'TRUMPINGTON.ST/CAMBRIDGE' single ring date stamp JY 5 90. Unusual provincial usage. (Ref 65264).