Nice photos
If you can poke around and find a Lon Warneke handwritten letter you may want to compare the handwriting. Google a Lon Warneke autograph and you can see the similarity between his writing of his last name in signature form and the "Warneke" identifier which appears on your photo. (I am assuming that the names are handwritten onto the piece and not printed within - I believe if printed within it would largely eliminate the possibility of it being Type I)
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