How much R 12 in 67 420?

Can someone tell me how much Freon R12 is used in a 1967 Jaguar 420 A/C system? I may try to revive my existing factory A/C if I can locate a new receiver/dryer and new hoses. I am familiar with R134 conversions and have done a couple on older Mustangs. What I want to know is the TOTAL WEIGHT of R 12 that was used. Thanks Pete

_ will try to answer my own question. A Ford 1969 Mustang with a York compressor used 1 3/4 lbs of R 12 Freon so I will start with that. Pete_

Pete,

I found this post from @Jagdad11, 3 to 3-1/4lbs R12, with a Sanden compressor.

That should give you a data point.