XU1215c. ultramarine, two examples, one showing variety handstamp inverted, the other showing variety handstamp sideways on piece with normal 15c., fine. ISC J5b, J5c

Details
XU1215c. ultramarine, two examples, one showing variety handstamp inverted, the other showing variety handstamp sideways on piece with normal 15c., fine. ISC J5b, J5c