Experience In Identifying Type Of Stamps Using Chat Gpt

I have always had difficulty determining the printing type of German stamps, such as 207P and 207W (Flat Plate Printing and Rotary Press Printing). Today I tried asking Chat GPT for help. In response, I received a verbal description that more or less matched the definitions in the Michel catalogue. In addition, the AI offered to help analyze images of specific stamps. I sent this scan for analysis and received a long and very specific reply with the following conclusion:
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Final Determination
Stamp 1 = Michel 207 P (Plattendruck)
Stamp 2 = Michel 207 W (Walzendruck)
You actually have a very nice comparison pair — the differences are clearly visible, which is not always the case with this issue.
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I would like to ask the experts — do you agree with this conclusion?

And this is another try: Michel 209. Chat GPT determine following:
Stamp #1 209P
Stamp#2 209W

MiNr 207 - both look like P to me. But this issue is difficult to distinguish P from W.

Here is a similar issue, MiNr 230, with the same difficulty. With the selvage there is no question which is P and which is W. Without, who knows.


MiNr 209 - agree. This issue is very easy to distinguish.