We love finding these vintage pieces! This is a large size Interpace Franciscan Discovery platter in the Topaz pattern. It is a beautiful light coffee color on the exterior and the interior is glossy white.
We took a close up of the mark on the back of the platter and as you can see, it's a bit blurry when the company stamped it.
This pattern is dated to 1965 from our research.
The platter measures approximately 13 inches long by 8 1/4 inches wide and 1 1/4 inches high.
The white edging on the base appears to be unglazed. There is some minor scratching on the inside of the platter, however there are no cracks, chips or crazing that we can find.