Page 50 - September1951

320 NATIONAL BUTTON BULLETIN September, 1951

BI:ACI{ GLASS CLASSIFICATION (Continued)
Passementerie jet: Buttons constructed with bits. of black glass attached to
frames of wire or cut-out metal. (20,21)
Reinforced tops: Buttons of fragile, thin glass, either curved like a watch
crystal or flat, which are given strength by a wide metal support on the
back: The metal may be embedded in a thick adhesive (as in watch crystal
buttons), fastened tishtly to the glass with a thin cement, or held loosely
in place with a pin-shank. (22-24)

metal escutcheon (17-19)
passementerie jet (20, 21)
reinforced tops (22-24)
PATTE'RNS AND I}ECON,ATIVE TI|PES
Etched and engraved: Place here only those buttons which show the marks
of a cutting tool (6-8) and those with the matt finish or "eatenaway" Iook
caused by acid action (1-5). Note: When chemicals have been used to nro-
duce color change, the buttons classify as painted.

Pntterns and decoratiye types' assotted
unlisted
designs, etched (1-5) nrrd engrnved (G-8)