I recently purchased my 2nd Francotte 410, not a Parker but doubt I will find a Parker 410 I could ever afford. I posted some comments and pictures on Doublegun Forum hoping to find someone who could tell be the difference between a Knockabout and this gun a 1923 HE sold as " Special Model". Bob Beach has been a wealth of knowledge as both of my guns were listed in the records. Bob continues to do some reseach, that I will share later. In the mean time if anyone has knowledge or thoughts between the two models it would be greatly appreciated.