Page 48 - September1951

318 NATIONAL BUTTON BULLITTIN September, 1951

BLACI( GIT.A,SS CIASSIf,'ICATION (Continued)
FINISH DEFINED: Finish refers to the surface appearance of black glass.
(1-12) Terms like bright, dull and satin explain themselves. Probably the
only classes that need explanation are:
Lustt'r: A finish with a metallic sheen. (5-12)
Multi-luster: A design carried out in two or more different lusters. (9)
Parti-luster: A design made by lustering part of the button and leaving part
black. Note: Mountings of silver-and-black should be given the number for
silver luster joined with the equals-sign to the number for parti-luster.
(10.11)

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l.irish, assorted (1-19) luster, assorted (5-12)
unlisted bronze/co1)per (5)
black, assor.ted (1-4) colored (6)
brisht (1) gold (i)
dull (2) gunmetal ( 8 )
dull and bright combineal (3) iridescent (8)
'satin (4) multi- (9)
parti- (10,11)
silver (12)
MECHANICAL MAKE-UP DEFINED: The term is used just as it was for
Clear and Colored Glass. (1-24)
Frarnes: Place here buttons made up of a frame and a setting. The frame
must be black glass, the setting any material except black Slass. (1-4)
tr'oil Trirn: Designs cut from metallic foil which is incorporated at or just
below the surface of the button. Note: Foil, when capped with clear glass,
forms the design for paperweights. When, however, it is secured in place
by various adhesives or by a thin flux of glass, it is a trim. (5,6)