
The Twenty-cent Prexie
Fourth class use
This insured fourth-class label has a notation of 17 plus 3 adding to 20, where presumably the 3 is for the three-cent minimum insurance fee in effect from November 1, 1944 to January 1, 1949. Wilbur Visual Services was likely to have been mailing film rather than books, and there is no indication that either the library or book rate were being used. Film was not covered by either of the special rates until 1953, so regular fourth class postage would have applied.
The shipment was within zone 2, and a one-cent surcharge would have applied, making the weight of the package between seven and eight pounds.