Osborne T Olsen began his Artist career painting porcelain art at the young age of 18. He had an Art studio in Chicago with fellow artist, some that had worked for Pickard China and had done similar work as Pickard with the All Over Gold method. Alan Reed in Collector's Encyclopedia of Pickard China has this signature on bottom of set as mark #3 which was used between 1917-1940. This design is called Trailing Vine AOG which was a Pickard pattern.
Osborne was a prolific Artist and loved the All Over Gold. Sugar and Creamer are skillfully etched in the Trailing Vine pattern on outside and Smooth AOG on inside and handles of both. This beautiful set is very ornate and is of German manufacture. There are no chips cracks or repairs on set,just the normal wear of gold you would find on a set of this age. Please view photos that I have taken from every angle for you to critique.
Please feel free to email me with additional questions. Layaway is certainly available. I look forward to doing business with you.