These 4-transistor converters allow the user to listen to AM and FM radio through a Panasonic 8-track player.  Each comes with its own vinyl carrying case.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/51764518@N02">Joe Haupt</a> from USA
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/51764518@N02/8378059620/">Pair Of Vintage Panasonic Radio Packs For Use With Panasonic 8-Track Car Stereos, AM Radio (Model CJ-901UB) &amp; Stereo FM (Model CJ-951UB), Made In Japan, Circa 1970</a>