细节
cover 1827 (5 Jul.) entire (filing crease) from John Felvus to London, endorsed "Single/Favour by the Honorable Dougald Laidlaw Esq."; rated "2/2" and backstamped with fine boxed "PACKET LETTER" in red and "B/17 AU 17/1827"; origin from docketing.
来源
Nabarro, 1975