This cobalt blue creamer and sugar is a named pattern with an unknown manufacturer. The pattern was featured as a punch bowl in a photograph on p. 13 in Hazel Marie Weatherman's Colored Glassware of the Depression Era 2 where it was captioned as "Top Prize" (unknown). To date, no company documentation has been found that identifies the manufacturer of this pattern or its official name.
The colors of the pieces that have been found--ruby, cobalt, amethyst, amber, and green--match those produced at New Martinsville. For that reason, the pattern is often attributed to New Martinsville. Another possible link to New Martinsville is the foot and dart pattern seen on a #43 Jug advertised in 1917 that was called "Icicle and Window," shown on p. 44 in Measell New Martinsville Glass 1900-1944.
Some collectors refer to this pattern as "Top Notch" or "Sunburst."
