Master cylinder ID
 

I wanted to see if anyone had any ideas about what range out cars this might work on and what would be a fair value. I know it would be a core since it's old and been sitting on my shelf for 20 years. I'm pretty sure I took this off a 1968 Impala Station wagon with disc brakes. The casting number is 29881, there is a symbol that looks like GL5 at the front. I'm assuming 225 cast in a square is the date. Thanks, Mark
Attachment 197930

Attachment 197931

Attachment 197932

Attachment 197933

Attachment 197934

Attachment 197935

Attachment 197936

Attachment 197937

I know little of full-size, but I suspect the MC is a replacement. The value is in the valves that you kept....

MC is Cadillac and Buick applications . Sold by Raybestos.

master cylinder
 

I'm not keeping the valves, was going to sell it all together, I guess if no one wanted the MC, I would part it out. So what are the valves worth? Thanks for the help, Mark

Keep the valves .