Roseville Produced products for the company from 1940 to the close of Roseville in 1954. Most if not all of the products were ashtrays and cigarette boxes. Roseville produced the pottery and Hyde Park inserted the metal disk with individual company names and also letters or initials.
Signatures consisted of The Hyde Park line or Hyde Parks Gifts with a number, sometimes mistaken for a date.
Value for this item depends mostly on the metal disk and the name of the individual company. For Example: A ashtray with Coca Cola on the disk would bring from 75 to 100 dollars whereas a disk with just a letter or initial would normally bring 12-18 dollars.