Due to your radio's lack of pushbuttons on the top, it is then a 1967 radio. From 1968 to 1973 the am/ 8 tracks were adorned with pushbuttons on the top. I assume you mean that yours wasn't built with these, and that is not just missing them. They sell for varying prices on ebay, with a median of around $75. It can fetch even more if it works. Of course, it's all about finding the right bidders at the right time. Hope this helps.