Ok, I borrowed a tack/dwell and a timing light and was going to dial this old girl in but when I went to do so I had a hard time with the timing marks.  At first I thought there were none but then I notices very faint markings.  The markings start with what appears to be a C on the left followed by 16 small marks to the left.  This is on a '58 f100 292 and the pointer is there and in the proper location.  Has anybody seen this before and if so can you help me figure it out.

Thanks

Cbass

1958 F100 292

"Nothing is particularly hard if you divide it into small jobs."

"Chop your own wood, and it will warm you twice."

-Henry Ford