I go to a lot of yard sales and recently, over a period of a couple weeks, I found three Accutron 218s at a total outlay of about $20. None were running when found and I ordered some batteries for them and finally got around to installing them. The first watch was dead the second one would hum but not run and this third one sprang to life and has been running fine and accurately.
It's an N1, 2181 in 14K GF case with a Speidel 10K GF expansion band.
My first Accutron and I'm very happy with it.