Hi egrabczewski,
Thanks for your Model 7 Serial Numbers.
Could you give us some futher information to help with the Survey?
Model 7: No. 7747-36734
Does this Meter have the Horse Shoe Magnet, Meter Movement ?
Does it have an Alloy or Bakelite rear Case ?
If it is an alloy Case, does it have the Black Crincle Paint finish or another Colour?
I think this Meter is to early for PF sockets, but I have to ask.
Never safe to assume anything in this Avo Meter Game.
Model 7 Mk II: No. 4694-A-1069-M
Does this have an Alloy or Bakelite Rear Case?
If alloy, is it a Black Crincle Paint Finish or other Colour?
Does it have PF sockets?
Regarding the Model 7 without a Serial Number, is this the one with a Blank
position instead of a White Dot as mentioned on your other Post?
I think this is likely to be a late Model 7. Some Photos would help to confirm this.
If your lucky, sometimes, the Serial Number is writen in Pencil on the Meter Movement
during repairs although this practice was less common during later years.
Later Meters with the Labels on the outside rather than printed on the Scaleplate, often have the Labels removed!
Can't imagine why that would be!
Ian