Always nice to see photos to show to skeptics. The IIIs is my favorite as well.
I recently traded in my Minox MX for an Acmel MD -- an MX with automatic shutter speed control -- but have not used it yet.
What do you use for metering?
I had once a brand new MX, traded it for a used B
; MX was a good camera, never got used to it though.
If it comes to IIIs or even B, I meter by eye most of the times, not very difficult if you bracket the odd shot. I do carry a light meter with me, but I only use it if the subject is difficult in reading. Other Minox cameras, having the internal meter, I use that.