Württemberg, 1851, 1kr black on light buff + 3kr black on yellow, type V. both silk paper varieties, each with four full even margins, tied by "Tübingen 27 Mar, 1854" cds's on fresh cover front, stamps lifted & reaffixed, pressed file fold affecting 3k stamp, Very Fine and choice, a very rare franking; with 1999 Irtenkauf certificate. Michel No. 1yb+2y  Estimate $400 - 600. $0 (Image)