German Siemens V Sa tist 66 C b close to W28

[dsk]

I got this phone from 1929, 2. year of production.

All other phones I have seen from Germany had a resistor and the capacitor across the pulse contacts. This one has none.

dsk
PS added 2 related diagrams. DS

[RB]

Nice.
Was the RC pair a pop filter?

[dsk]

Nice.
Was the RC pair a pop filter?

My English is obviously not good enough, could you please explain what you are asking about. 
dsk

[RB]

Sorry, DSK, pop filter is what takes the click, or loud POP sound out of the receiver when dialing, and going on/off hook.
Now that I typed it out, I don't think it is a pop filter.
What do you say the resistor/cap are there for?
I should have asked it that way to begin with...

[dsk]

  Now I wonder why I didn't understand that 
The resistor and capacitor was put across the the dials pulse contacts to reduce the risk of sparks.
Probably not a great problem, it still works OK after 92 years 

dsk

[RB]

OK, thanks for clearing that up!

[dsk]

Looks like this version also may be named SA 28