Carved And Gilded Frame With Pure Gold, Late 17th/early 18th Century, Containing A Paste Of Mar

Carved and gilded frame with pure gold, late 17th/early 18th century, containing a panel of martyr saints
The expression describes the so-called "relic paste" or "bone flour," a historical paste actually produced between the 17th and 19th centuries (especially in Rome) for devotional and clerical purposes.
Origin and Production
The Process: It consisted of collecting minute bone fragments from the Roman catacombs, grinding them, and reducing them to a very fine powder.
The Mixture: This bone powder was mixed with an organic binder or a special glue/flour to form a malleable compound.
Use of Molds: The mixture was poured or pressed into molds (matrices) to create small devotional objects, medals, tablets, or simulacra of martyred saints' relics for distribution to the faithful.
In this case, the simulacrum represents Baby Jesus
Measures 22.5 x 20 cm.