I would like that as well. For the Pentel Book, it would be nice to have full size shots side-by-side along with the date codes, so we can put a range on it.
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Just checked my PSD5. The vertical date code was super crooked! 8201 •
And the knurling felt pretty well-defined? I don’t have another on hand to compare it with 
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The Date Codes on mine
PSD5 8307 . .
PWP15 8006 . . .
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What’s the technique for extracting the mechanism? Mine won’t slide out of the body, despite numerous attempts rotating at every degree. I don’t want to over-force it and break any plastic bits.