Can someone help me date this typewriter?
I have this ancient typewriter that was $5.00 at a thrift store. It works and is in excellent condition, has been kept clean and in order.
I am trying to figure out how old it is. It is a Silver-Reed Sovereign 750, made for English-speaking countries by the parent company Seiko in Japan. It has the @ symbol, but I don't know if that means much. The keys are loud and attached to metal arms that can be seen in the open as they strike the paper. This typewriter has a H__L (hard/light) switch, which someone said was only on 1950s or older models. The cover, the tops of the keys, and a few other parts are plastic, and the wheel on which the paper turns is rubber. There is a high-low switch (usually used for red-black ribbons) and a Margin Release button. Does anyone know just how old it is?