WE #2 #4 #5 #6 and #7 #9 and several non-WE dial Comparisons

[TelePlay]

Image shows the basic difference between these 4 dials (note: there are variations of these dials)

[WEBellSystemChristian]

Thanks for posting this, John!

Also note that the the sides of the casings differ between the #6 and all earlier 3" dials. The #6 is also slightly taller.

[TelePlay]

As for non-WE dials, here are a dozen various different manufacturer's dials that may be helpful in identifying that dial you got your hands on.

thanks to another forum member - Gary

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#1  S-C

#2  KELLOGG For RED BAR 10D

#3  KELLOGG For SELECT-O-PHONE 11A

#4  KELLOGG 15G LD590

#5  AE

#6  SIEMENS NIG

#7  FEDERAL ELECTRIC

#9  AE JF45 820C

#10 AE 820C

#11 NORTH ELECTRIC 941

#12 AE 870C AE8

#13 S-C 247