At 38mm without the pendant this is the smallest fusee watch I own. I just finished restoring it. Many thanks to members radger and Joe Horner for helping sort out a tricky problem .
It came without crystal, minute hand and wasn't working. The basic problems were a missing impulse jewel and cracked hole jewel in the potence. After fixing the movement I made a new minute hand, put a new acrylic crystal and here are the results.
Here is the 7 jewel movement.
I never polish the case on these. The case was dismantled, all the steel parts had some tea , case was thoroughly cleaned and then reassembled.
Since there is no seconds hand it has half minute marks.