SBK FV 18A1 Block of 4 all with engraver's mark on cover. According to SLH this is the LARGEST MULTIPLE KNOWN. VERY FINE in all respects. The item "Switzerland 1926 Airmail Binnenschiff Flight with vignette SBK FV18A1 block of 4" is in sale since Sunday, July 6, 2014. This item is in the category "Stamps\Europe\Switzerland".
The seller is "frumi" and is located in Hawk Point, Missouri. This item can be shipped worldwide.