Manufacturer: McNicol China
Pattern: Carlton
Date of platter: 1931-1960s
White body, floral and fruit border, most often found in black. One known user of the pattern in black, with additional topmark, was the Martha Washington Inn, in Abingdon, Virginia. In this version in blue, the customer might have been the Maplewood Hotel in Bethlehem, New Hampshire, but that is conjecture.
For related info:
Lafayette Restaurant for a custom topmarked version in teal color; and
New Celestial Chinese restaurant for a custom topmarked version, also in dark green.