I went to the Londonderry Flea Market (formerly known as Londonderry Gardens at the time) and found a vendor who had scrap phones for sale. I was able to get a couple bagfuls for about $25 and another telephone for $1. Not bad.
In this picture, I got a ringer. It looked like it came off a 564, which I did buy a set with it’s own ringer. I wanted to use this set of bell to make my own ringer to alert me outside a call is coming in.