It's not usually both in production. More modern stuff except art is always metal plates.
But metal plates were fairly new in 1909-10, And a lot was still done using stones as the plates. Figuring out which was used is very hard.
At the time a lot of the plates were laid out using transfers which were probably printed from stones. A lot of the stones that are still around have multiple items on them, like billheads from 3-4 different companies, or parts of labels from unrelated brands.
Steve B
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