4 s. turquoise green, in fresh color, everywhere full till large margins copy with a slightly cover crease on a preprinted folded cover of an insurance broker. Transports as a double cover with a clear bar obliterator cancellation together with oval K1 "HAMBURG 27/4 61 " after pay in Oldenburg, corr. end valuation" fr 8 s " - the cover contained deposits in the form of insurance certificate and the General Conditions of Insurance. The 4 which are second, originally leftly situated and being part of the postage paid s.Stamp was removed once and full till large margins 4 is through one today s. replaces (with hinge fastens signed Richter). This is the only known piece of evidence for a correctly stamped multiple franking use of the imperforated 4 shilling issue of Hamburg. A unicum and a big German states cover rarity is therefore this cover! Kuphal, and others sign Dr. Werner, Carl H, all over. Lange, Grobe, Kruschel and Schwenn, certificate W. Engel BPP