||CSA #12 (KB) Horz Pair (4-Margin) tied by the large single rim Charleston SC
CDS 14 NOV 186(4). Addressed to R. B. Rhett Esqr Junr, Charleston, So.
Ca. The addressee, Robert Barnwell Rhett Jr (1828-1905), was the editor
of the Charleston Mercury
newspaper and the son of Robert Barnwell Rhett (1800-1876) who was a
very prominent South Carolina politician and a "fire-eater"
secessionist. The Rhett family owned a plantation in the Beaufort area.
The cover, a folded lettersheet from which the page with the letter has
been removed, is by definition an Overpaid Drop Letter
(postmark and address from the same city). Most unusual to see a pair of
10c stamps overpaying a drop letter, but it is possible. It could also
be a "way" use originating from somewhere outside the city between post
offices and double weight accounting for the double rate, but that is
only speculation and cannot be proven without the original letter. Very