An earlybird post for this "Peltier Tuesday" the I.D. post is from the (MCSA) Marble Collectors Society of America site w/ the pix (all but the pearlized patch) from me.
LINK : https://www.marblecollecting.com/marble-reference/online-marble-id-guide/peltier-glass-co/
Peltier produced a patch marble which they marketed as the Peerles. The Peerless patches are very collectible today. The marbles are a two-color patch. They are identifiable by the uniqueness of their shades of color and by their design. Peerless patches are the type of marble that Peltier Picture Marbles (comics) are on. The most common color combination is black patch on white, green patch on mustard yellow, transparent green patch on white, red on white, yellow on aqua, or red on aqua. There are other color combinations, but they are rarer. The rarest patch color is called “pearlized”. This is a greenish color that has a satin shimmer or sheen to it. These are very rare. The design of the patch on Peerless patches is unique. The patches of other companies have straight edges. Peltier marbles have patches that have curved or “S” edges. This feature, along with the unique colors, makes Peerless patches easily identifiable.
Pearlized Patch