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So this topic is a hot mess, mostly caused by speculative attribution of drawings to known model descriptions.The first principle must be that there are many drawings we have no clear description for, but logically all the sequential numbers between known models may exist, so these drawings could correspond to these "unknown" models.The second principle is identification of model numbers relies on explicit linkage via text source or the model photo.Thirdly, we can tentatively identify drawings that appear consistent with text descriptions, but these must be marked as tentative.
So this topic is a hot mess, mostly caused by speculative attribution of drawings to known model descriptions.
The first principle must be that there are many drawings we have no clear description for, but logically all the sequential numbers between known models may exist, so these drawings could correspond to these "unknown" models.
The second principle is identification of model numbers relies on explicit linkage via text source or the model photo.
Thirdly, we can tentatively identify drawings that appear consistent with text descriptions, but these must be marked as tentative.