The use of minisatellite variant repeat-polymerase chain reaction (MVR-PCR) to determine the source of saliva on a used postage stamp. In this paper we report the identification of an individual using the MVR-PCR technique on DNA extracted from single and multiple discs (3 mm) punched from....
while many Columbian stamps are perfectly perforated, others are distinctly substandard in this regard, with partially punched chads and/or holes that are missing, ragged or misplaced – flaws that would also mar the
- Relates to machines for perforating postage stamps to cancel them or to prevent them from being used by persons other than the owners, and consists in special strip-feeding means of the kind actuated by the reciprocating punch, and in punch - selecting means. The machine is adapted to ...
A Census of U.S. Classic Plate Blocks 1851-1882 by John C. ChapinA history with notes on each of the 524 plate blocks. 1983, 96 pages, cloth, 16 page May-June 1984 CP supplement, paper, $25.50 The United States Five Cent Stamp of 1856 by Richard C. Frajola and Frederick R. Mayer...
A Census of U.S. Classic Plate Blocks 1851-1882 by John C. ChapinA history with notes on each of the 524 plate blocks. 1983, 96 pages, cloth, 16 page May-June 1984 CP supplement, paper, $25.50 The United States Five Cent Stamp of 1856 by Richard C. Frajola and Frederick R. Mayer...
I HATED using the initial huge ring binder edition as time went on, as the printer punched the holes way too small in my view. Making finding any given section an annoying juggling act, risking damaging and tearing all earlier pages each time. This one is a BREEZE to use. For instance...
The paper with the circular watermark isoften yellowish and thinner than that with theoval watermark and sell for much higherprices.See note after No. 35.Perf. 111/235AbA31k black36aA32k violet37aA33k green38aA35k rose39aA38k orange40aA310k blue41aA312k red brn & grn42aA315k rose & ...