spindleboy

I am looking for a master cylinder for my 1927 Model 60. Can anyone help?

I am a new member. I have a 1927 Chrysler 60 Tourer. I have owner 'Steve' for 3 years. I have recently sorted my starting problem by uprating the battery leads, and having the starter motor rebuilt. I now have a problem with the hydraulic brakes. It appears that the master cylinder has given up!!  Has anyone any knowledge of a master cylinder or if I would be able to make repairs to the one on the vehicle.   A pic of my car is attached.