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Thank you for the information again, Steph!
I am closely looking at the enlarged picture right now. The white looking marbles could be German porcelain marbles with petals and circles. Then I see something like half & half and figure8s...
The 1929 date sounds like a bit too early for Japanese machinemades. The first automatic gob feeding system in my country was thought to be started by Naoyuki Seike. The patent (Showa6-2564) was applied in Aug 1930. Yet Seike could have been the first marble maker who exported glass marbles to western countries. Glass marble makers before Seike exported marbles, but they were heading to neighboring countries. In 1937 magazine, Seike explained how his marble business started; his factory started in Taisho13 (1924) and his first marbles were exported to America and Australia, although they were in small number.
I've been through the thread and learned the trademark information was what Brian had posted at AAM.
Yasuda had been one of the big glass bangle makers whose main consumer was India. It says the trademark was registered for glass bangles and other glass products. We do not know for sure whether Yasuda made transitionals as early as 1929.