Lot 61764 – 1861 80c yellow, reconstruction of the 12 types in 10 covers and 2 covers front/part coveran incredible group of ten covers,

1861 80c yellow, an incredible assembly comprising the 12 existing types of this value, used as single franking on ten covers, one front and one part cover, few different shades including the scarce lemon, in mixed condition and requiring to be examined, but most of the examples being well margined; this value, paying the double weight domestic letter rate, represents a daunting challenge in assembling the 12 types on cover, being probably unique; cert. Hernández Rocha (2008); ex Scott.