Please let me know what I can use...

Antenna Serif Light  Vorgeschlagen von donshottype 

Looks like it was pin punched by a machine on a metal sheet,
AFAIK there is no exact match in a conventional digital font.
Antenna Serif Light has similar boxy bowls, narrow slab serifs and narrow slab tab terminals on _C_ and _S_.
But it is not identical: different vertex on _M_, terminals on _6_ & _9_ do not fold over etc.