Three early-generation Toshiba transistors are fitted on the lower part of the circuit board. Their black cylindrical packages and concave tops should be pretty easy to spot. The ferrite bar antenna stands mounted along the right side. Note that this configuration is not uncommon to Aiwa; the company often placed their antennas in unconventional positions. There is also a jack for connecting an external antenna in the top center, and you can see the earphone jack at the top left of the photo.
Transistors: 2S12 - 2S24 - 2S25
Battery: 9-volt (BL-006P - the standard rectangular kind)