Hi! Just picked up this Welsbro Swiss chronograph and I'm not sure what the movement is. The movement is marked Welsbro Watch Co and the proper WXE on the balance cock. Looking through my movement book it's either a Venus 150 or Venus 175. Without being able to properly measure the width of the movement with the proper tool I just tried it with a tape measure and it appears to be 31mm. Funny thing is that it doesn't exactly match the pictures I have of either the Venus 150 or 175. Perhaps the early models were a little different? I'm thinking the watch dates to the forties but not sure. It has two service marks inside from 1950 and 1954. It actually keeps time fine and the chrono function works but the hour hand is not moving so a service is probably due. Any thought as to the movement type would be appreciated. I left the movement pic rather big to show the detail.