9 Kreuzer on reddish carmine, extremely fine copy with jag wheel cancel "87" and alongside box cancel of 2 lines "MANNHEIM / 2. June" (1860) as correctly franked single franking on Postal Union letter with railway mail "Mainz Cologne" to Bonn (with arrival postmark), on all sides full- to having huge margins, right with part of the neighbor stamp, cover archive fold, with full content