The Year is incorporated in the date code with 8H being either August 1968 or August 1978. However, Brian's Windshield glass has the correct for 1969 (CarLite) Logo instead of the later CARLITE block letters logo which I believe had been introduced before 1978. Brian, if SUN-X is not mentioned in the Marti nor is your car an A/C car then my personal best guess would be that your side glass has been replaced at some point. It would have been fairly easy for a PO to replace the side glass, more so then replacing the windshield with a date correct original piece. A lot of the 69s had their door glass replaced pretty early on due to the poor design of the glue-in mounting.