I thought I'd seen earlier 1969 dated examples but didn't have any pics to post to back up my fuzzy memory. They used both style stamping machines at the LA plant, and they used them at the same time as one another as well, so there was no dead set dates for one or the other when both were being used. I have examples of the thin font style back into the early 1960's but don't recall when the large font style started appearing.