London NPS-4. Beautiful near mint...
Other criteria that many consider are the maker (in the case of pottery mostly), sheer design elements (e.g.. ornate 50's ashtrays with bright colors or weird shapes are popular even with nonsmokers) and existence of advertising for items or businesses (graphics always add some value too.).
Classic 1970's Melamine hard plastic ashtrays with original stickers still ..More
Probably mid to late 1950's with great raised lettering edge and Lion logo ..More
4" x 5 1/4" at widest points. Unused and overall excellent. ..More
Not signed but Fratelli Toso is noted as the only one with this great techn ..More
The Founders of Rome. Hand made Pottery Ashtray made in Italy and marked M ..More
Irregular but approximately 7" long. Real Gold fleck in these trays. NM. ..More
1970's. 6" diameter. 2 1/4" tall. Superior quality with etching even on ..More
6" diameter. Really great hand crafted ashtray with three rests. Features ..More
Beautiful condition 12" tall colored Chalkware figure with ashtray bottom. ..More