['ol Pinion head]

Were H70-14 Polyglas tires the stock size of raised letter tires avail on a '69 GP?

I have never sent off for PHS on my 428HO '69 project & don't have a reference to note tire size.
Am looking at an NOS set of H70-14 Goodyear Poly glas small letter tires that an old friend bought & properly stored for over 30 years ago. He did so in anticipation of putting a show set of tires/wheels together for his low mile 428HO SJ. At that time, we drove 4 hours & met with a Shelby collector who was also a longtime Goodyear rep, with me buying NOS G70-14's, which Kelsey stated for quite a few years would not be reproduced.