and "25" written alongside and a few other minor annotations. Photo" /> Proof Appendix E sheet bearing 1c. (27) on green paper (9), yellow paper (6), buff paper (3) and white paper (8), one stamp (black on yellow) has been marked off with<I> "No 4"</I> and<I> "25"</I> written alongside and a few other minor annotations. Photo | Christie's