The TR-7120 was on the market in 1963 and was made in Shannon, Ireland. Most of the parts in these "Made In Ireland" radios originated in England or Ireland (except for the transistors which came from Sony in Japan).
Sony's assembly plant in Shannon, Ireland began production in May of 1960 and concluded in January of 1966. About 100 employees produced 3000 radios per month. Having a plant in close proximity to Europe and many Commonwealth countries meant easier access and cheaper distribution to these markets*
* Ireland and the U.K. were soon to join the 'European Community' which would open up many new doors for Sony. Furthermore, Shannon was designated as a free port and was a major transit point in the Western Hemisphere. Transistor radios could be shipped from Shannon to England, Canada, several European countries, Africa and South America.
Pictured below is the TR-712 which was made in Japan. Below that is the TR-7120 which was made in Shannon.
The TR-7170 is a bit more compact and streamlined than its predecessors. Also note that the handle is molded into the cabinet and seems more durable than the wire handles of the TR-712 and 7120 which are commonly found cracked.