Hello. Does anyone recognize the signature on this paperweight? Nothing I'm coming up with is showing up in on-line searching (A FRUMM, V FRUMM, AFRUMM, FRUMM, FROMM etc.) 6/83 I assume is the date. 2 1/2" dia., 382 grams. Pretty neat design, great color in the cane blobs (probably not the correct technical term!), big central trapped teardrop bubble. Any help appreciated!