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20th Century
 
 
 
ON-LINE CATALOG
 
General Issues
GO 20th Century 1913 to 1999 (#397 thru #3465) (booklets BK's integrated)
GO 21st Century 2000 to date (#3466 thru Current) (Booklets BK's integrated)
 
Back-of-Book Issues
GO Semi-Postal B1 thru Current
GO Airmails C1 to C150 (booklets BKC's integrated)
GO Air Post Special Delivery CE1-CE2
GO Special Delivery E11 thru E23
GO Registry F1
GO Certified Mail FA1
GO Postage Dues J79 thru J104
GO Modern Officials O127 thru O163
GO Postal Insurance QI1 thru QI5
GO Hunting Permit (Duck) Stamps RW1-Current
GO Junior Duck Stamps JDS1-JDS27
 
Other Issues
 
GO Modern Plate Block #702 thru current
GO Plate Number Coils #1891 thru current
 
Notes:
 
1. Images are  for reference puposes - the actual stamp received will match the item description as to grade.
2. Stamp technical information comes primarily from US Postal Bulletins (https://about.usps.com/resources/postal-bulletin.htm).
3. Please make comments - we are trying to make the site user friendly and provide additional information to make the hobby more enjoyable.