The EFO Collector
Auction
Club Business
Honor Roll
Buyers & Sellers of EFO Material
| Click here for a printer friendly version of this essay. | Click here to send a note or comment to John Hotchner. |
73. Other experiments: Many experiments have been conducted over the years that have resulted in the issuance of unusual stamps. Examples are Banknote double papers and other varieties aimed at reducing the removal of cancellations, blue and clay papers in the Washington Heads to control paper shrinkage, and Silkote paper on the 1954 2¢ Jefferson to improve the printed impression. All exist in limited quantities and have significant additional value.
Type 73: This cover shows a postal use of Scott 359 printed on blue, high rag content, experimental paper. The objective was to control shrinkage and reduce poor registration of perforations. The experiment was a failure.
| Previous: Spacing and sheet layout varieties | Other experiments | Next: Test stamps, coils and booklets |
| Table of Contents | Oddities |