I too have been searching for information on these plates. Just the other day, I stumbled across the name "Seetusee" for them, which has given me the opportunity to find this site. I have discovered some information but would love to hear if anyone else can add to it.
I have 3 plates (I have only seen 4 in person to date, I bought 3 of them!) Two 6-7 inch dishes and one 18 inch by 8 inch platter. I am happy to find others interested in these plates too.
Here is what I have found so far, Hopefully you can add to it!
*All Seetusee pieces are unique as they were hand painted, cured and carefully
sealed with a pigskin backing with a distinctive finish of gold or silver paint
that sets them apart from Mexican pieces. The colours are mixed, exciting and
vibrant and have stood the test of time. Like many styles of art or craft they
have gone through periods of popularity and decline. Each of the huge variety
of shapes are identified by a number (with or without an 'M' prefix) stamped
on the pigskin backing. The brand (Seetusee by Mayfair Glass) is also named
on the backing, either in the form of a stamp or via a sticker label.
Seetusee was a glassware manufactured in Portage la Prairie, Manitoba, Canada
in the 1960's. It was inspired by Mexican painting on glass but was perfected
by George Hill and Foss Giffin. George Hill was the son of a prominent Portage
druggist and was the force behind several entrepeneurial ventures, including
the Mayfair Hotel, Mauna Loa Lounge, and a car dealership. The hotel burned
down in 1969 but the building that housed the manufacturing facility (which
was also a bakery) still stands and is now occupied by a drafting firm."
The Mexican version reads:
Multicolored plates and platters in various sizes called "pigskin glass".
The glass is composed of recycled glass, water based paint, and other
decorative material. It is heated in a kiln where the colors mix and the
glass slumps to seal the piece. Rich, vibrant colors result from this
process and creates a unique piece.
The pigskin glass is primarily decorative and can be used for
tabletop, displayed in a plate stand, or hung on a wall with the
built-in hanger.
Another Mexican reference says:
These decorative 12” square glass plates are called “pigskin glass”
because the backing was originally made from pigskin leather.
Manuel Silva and Robert Ornelas are the artists that created these
plates. The pigskin glass is environmentally friendly and is made with
recycled window glass, water based paint, foil and screen mesh. It is
made by first placing the backing material in a mold, decorative material
is applied to the backing and glass is placed on top. The glass is then
heated in a kiln where the heat causes the colors to mix and “slumps” the
glass to seal the piece.
Garry