I have two 1946 original paint Schwinn(s); one a DX; the other a standard step-thru; both came with a reflector that looks like this... Jeweled facets and all; but, neither had any writing or name on it. Across the back at center the measure is 1 17/32". From back face to dome center (face NOT flat) on front is near 1/4" thick. Each reflective dot is near 1/8"; and where any diagonal of the reflective pattern passes thru center there are 8 dots in that row. The reflector was retained by a convex spring clip, rectangular, ~3/8" X 3/4"... not held by a hex-nut. Could not tonight, but will try tomorrow to get photos.
You asked for 'correct'; these came on a 1946 ACE girls bike and a 1946 Peoria King DX boys bike. The Gulatta pictured above is 1 11/16" diameter; slightly larger than these, about 1/8" diameter... see post #3. (Both of these bikes were Chicago Schwinn builds).