cover -- 4c. black on deep blue with small to good margins, lightly tied by Demerara c.d.s. on 1852 (Oct.) addressed to Georgetown and showing c.d.s. on reverse; the envelope a little creased. R.P.S. Certificate (1966) states "..that it is genuine but creased and a little 'touched up' in places". A very rare stamp on cover. S.G. 10. Photo