The write up was very interesting, I enjoyed it a lot; and the pictures were excellent.
However, I think the writer said that while the Borchardt used a flat spring, Georg Luger used a coil spring in designing his iteration. I think youse guys have taught me that the early Lugers also used a flat mainspring and later went to a coiled mainspring.
Or have I, once again, misunderstood the data?
Gunny John
PS. "Picky, picky, picky."