There are a couple of threads in here on the 73 and 74 releases. In 74 the cards were all released at one time. In 73 there were series but in some areas all cards were released at the same time in the same packs, I assume on a test basis for 74.
Not sure on release dates. From 63 to 67 I bought Topps sets from the Card Collector's Company in NY and the cards were delivered in individual series over the course of the summer, but I do not recall the intervals on the individual series or dates I got the final series
|