Stamp dating and dictionary dating for larger people
These indicia are not always postmarked by the Post Office but if put into the mailstream later than the date listed on them, they are postmarked about 50% of the time. People could buy the bills at face value, add a first class stamp (at the time 13 cents), and have the combination postmarked to show they were the first day of issue.
In England during the latter part of the 17th century several postmarks were devised for use with the London Penny Post, a postal system that delivered mailed items within the city of London.When the first universal postal system was started in the United Kingdom with its Penny Black, the postmark used red ink for contrast.This was not successful, and the stamp was changed to non-black colours so that the postmark could use black ink.A philatelic term for when one or more edges of a stamp do not have perforations.Not to be confused with a coil stamp (always has two edges without perforations), a booklet stamp (can have one, two or three edges without perforations) or an imperforate stamp (which has no perforations).
This was used in conjunction with a date stamp which was applied, usually to the rear of the letter, which denoted the date of posting.