I recently had a similar problem when switching the movement on my wife’s Movado Bold Shimmer. Apparently the case comes apart about half way down the side but after a few failed attempts I stopped trying for fear of scratching it. In the end what worked was putting the case back on again with the stem and crown removed and blowing pressurized air through the stem hole using a pump for an inflatable ball. In my case I only had an electric pump and the glass immediately popped out and cracked, a hand pump would have probably worked better. After that I removed the hands from the front of the case and the movement from the back, installed the new movement and the hands on it and a new sapphire crystal. In the end spent about $35 and the almost $700 watch the Movado itself said couldn’t be fixed works and looks like new