Jurgensen Mainspring Winders??

[PostwarO27]

Hey All,

I came across a box of 20 mainspring winders and a handle on Ebay with not much of a description as to the make or quality.  The only descriptive term used in auction  "stamped SWISS" and the rest was all pictures.  They were all thrown loose in a box and the images were not very clear but one image showed an arbor and that one at least appeared to be steel and not brass like the cheap Chinese winders found on the market now.  The plunger in the winding drum appeared to be steel as did the dowel that locks into the handle.  Fourteen winders had arbors (00 thru 12 consecutive), there were six winding drums with no arbors (2pcs #1, 1pc #3, 2pcs #5 and a single #7) and a handle .  They were only up for auction for 15 minutes before I took a chance and ended it with the BIN.

The package arrived the other day and I went thru the parts.  Most of them (12) that had arbors are stamped "Jurgensen" on the arbor crank along with corresponding barrel size, some (6) arbors are only stamped with the barrel size and a couple (2) arbors are stamped Bergeon, but all of the winding drums are stamped "SWISS" as told in the auction description

An internet search for "Jurgensen watch tools" yields exactly 0 returns for actual watch tools of that name but a plethora of returns for "Jules Jurgensen" watches.  I can't find any info on watch tools with the name "Jurgensen".  Anybody have any insight?