New Haven, Connecticut, 1845, 5c dull blue on white, with blue "E. Mitchell" signature, manuscript "Due –" with "5" handstamp in red alongside, postmarked with "New Haven Ct / Apr / 17" c.d.s., to Dr. Sowell in Athens, Alabama, in the hand of famed Yale chemist Benjamin Silliman Jr., small piece torn from back from removal of seal, cover has been professionally cleaned to remove staining, a fine-appearing example of this rare Postmasters’ Provisional, one of only a handful believed extant; Philatelic Foundation certificate no longer accompanies. 

CV.

New Haven Connecticut, 1874, 5c carmine on hard white paper, signed "E. Mitchell" in blue ink, reprint for Chief Clerk for Mitchell Cyrus B. Peets, trivial thin spot on lower margin, else very fine and scarce reprint, one of only thirty made, offered with 5c red and dull blue on hard white paper, two examples from the reprints of the New Haven Philatelic Society, with stamped signature of E. Mitchell and with "1932 FINAL RE-STRIKE" and numbered on reverse, 260 restrikes were made on this occasion before the handstamp was defaced, fresh and very fine, alongsisde a concocted cover purportedly with the 5c dull blue impression, to famed dealer Warren H. Colsen in Boston, a charming creation.

CV.