They are generally marked in ink with a printed monogram or initial. Some of the larger wafer seals are sensitive to moisture. Very occasionally, the chemicals in wax seals will migrate and can present a threat to the face of the cover. In such cases, it is often best to place several thicknesses of acid free paper inside the cover to absorb any migrating materials from the seal. Such papers placed inside the cover should be examined periodically and changed, if necessary.
Wax seals contain bee's wax, shellac, and often a pigment.
They are hard, brittle, and adhere to the surface of the paper. Care should be taken to prevent them from being broken or crushed. Otherwise, they present little problem in conservation. Return to Preceding Section 26. Return to Table of Contents in Main Home Page.