J4c, J4 (D5a, D5) 1929 9¢ black on orange Postage Due typeset, rouletted 10 (showing on two sides), VARIETY - "cent.s" for "cents.", only occurred once per sheet of 10 (row 4, pos 1) of the initial printing, top stamp in vertical pair with normal, rare and undercatalogued, light double-ring "Zanzibar" cancel.
