I picked up a Bunn Special, 60 hour, 1927 date, a couple of years ago. The price was low because the case has an initialed back. The dial is identical to your Bunn.

It runs slow, 3min/week; I don't think it has been serviced since 1944 (watchmaker's mark).

I like those Lord Elgin wristwatches too, some nice cases. I have one with a black dial and square face that is as pretty a "dress watch" as one could desire. Some bargains out there, I could be tempted to start collecting again.