Anyone know the purpose of this AE Dial?

[TelePlay]

It looks like a typical AE dial but the leaf pileup is much different.

The pulse leafs look "normal" but the shunt leaves are actuated by a strange red fiber disk with 3 "pulse pins".

These are the only images posted in the eBay listing:

https://ebay.us/m/aNl5rt

Seems to be stamped 800A. The number ring and finger wheel are not included.

[poplar1]

SATT dial

To identify which party to be billed for toll calls

Strowger Automatic Toll Ticketing

[TelePlay]

To identify which party to be billed for toll calls

So, does the number of pins on the red fiber disk identity a specific dial?

If so, would this dial be party #3?

And if so, there could be up to 10 distinct or unique dials on a line - 1 to 10 pins?

I can see where that top red fiber disk could be easily removed and replaced with a disk with more or less pins, simple 3 screw removal.

[paul-f]

Here are some references:

https://www.telephonecollectors.info/index.php/search?q=satt+dial

https://www.telephonecollectors.info/index.php/search?q=ae+bulletin+528+june+49

Happy Reading!

[paul-f]

For more SATT details, see GSP 997-300-500 i4 Mar79, Adjustments bookmark, section 10.10, p 22.

https://www.telephonecollectors.info/index.php/search?q=997-300-500+i4