These switches are brand new old stock.

Russenberger Serie 200

The switches have the following markings on them:

18(8)A - 10(4)A T125 250V

18A3-4HP
125-250V
12A 6-12-28V-DC

Dimensions are:
Fixing Hole Size - 11mm x 22mm
Switch Size - 14mm x 32mm
Switch Depth - 31mm

The switches have 2 locating lugs, one at each end, but these could be removed wit a small file if needed.

The photos are of the actual Item for sale.  Please check the pictures carefully as they form a large part of the item description.  What’s in the pictures is what you will receive, noting more and nothing less.