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INSURED BOXES
IMPERIAL AND FOREIGN POST
Articles of gold and silver, precious stones, jewel- lery and other articles of a like nature, which are prohibited from transmission in insured letters, may be sent in insured boxes to the places shown as partici- pating in the service in the table given on pages 125 to 215 insured up to the maximum indicated.
Insured boxes may not contain letters, notes or documents having the character of actual personal correspondence, banknotes, currency notes, or securities payable to bearer, but an open invoice in its simplest form, as well as the sender's and the addressee's name and address, may be enclosed.
Special postage rates
The postage is 20 cents for 2 ounces with a minimum charge of $1.00 and must be prepaid together with the insurance and registration fees.
The limit of insurance is $2,500.
The maximum weight is two pounds.
The maximum dimensions are 12 inches in length, 8 inches in breadth and 4 inches in depth.
Make-up
A strong box must be used of metal or wood. With a wooden box the wood must be at least one-third of an inch thick.
An insured box must be tied crosswise with a strong string in one piece without joins and the two ends of the string must be secured under a seal of fine wax bearing a private mark. The string must also be sealed to the box on the four sides with seals identical with that used for the ends of the string. The box must not be wrapped but the surfaces of the top and bottom must be covered with white paper for the in- scription of the addressee's name and address and the insured value of the contents and for the impression of the official stamps.
Space must be left between the postage stamps and between the postal labels. They must not be folded over the edge of the box.