I am having a heck of a time finding a Venus 175 monopusher. Have found all two pusher movements. What I need to know is how they differ. I am not a watchmaker but would like to know what the modification was from a two pusher to a Mono. Have an RCAF Rodania case to fill. Currently a movement on the big auction site with the same markings on pieces as Rodania but under a different name. One watchmaker told me the difference is " little engineering, no biggie" he didn't elaborate. So if anyone can let me know if purchasing a double pusher to make in to a Mono is possible, I would greatly appreciate it, or any other info. Regards, Shane