Pin-out UM 92S:
#1: Audio (+)
#2: Audio (-)
#3: Electrical Ground, Chassis Ground and Shield
#4: Tube Heater
#5: B+
#6: Nothing
#7: Rear Polarization Voltage
While the voltages will be the same for the UM92S and the UM57, the pin- outs and connectors are different:
Pin-out UM57:
#1: Ground
#2: Audio (+)
#3: B+
#4: Heater
#5: Audio (-)
#6: Rear Pol. Voltage
While UM92S and UM92.1S share the same connector, the voltages (and pin-outs) in the latter are vastly different, due to a different tube being used (EF86). So a power supply suitable for a UM92.1S is not applicable for your mic.
If you cannot get ahold of an original supply for your UM92S or UM57 (its called the UN920 and UN61, respectively- try eBay.de),
you can hire Scott Hampton ("Hamptone") to make you one.
Best of luck!
KH