Yes, there was an option for gold leather in 1969. (Previous years had a saddle color.)
It is a rare option. There is no known record showing how many 1st gens got the leather. I believe the interior option code is on the trim tag on the firewall. But, if you would like a list of all the options originally, contact https://www.phs-online.com/ and for a charge they give you all the billing information.