What Astatic model is this?

[Tokin]

The back which doesn't fit right says 555. The problem is this back uses the old style star shaped removable stem and the mic has a stem built in the the potentiometer and the diameter is larger than the hole. Also the mic grill is convex where i thought the 555 and 557 were concave.
Im guessing with out the proper back the only way to confirm the model is by the switch wiring? I believe this is an M6, maybe first gen judging by the 7.5v battery use but can't find an example with a back that will fit properly to confirm.
Any help would be appreciated, thank you.

 

[gamegetter]

looks line an older/original-style 575-M6 or a d104 as I look through some more pictures here on line.

Astatic D-104-M6

 

[SuperLid]

D104-M6 Minuteman II

 

[gamegetter]

here is a link to a manual

https://cbtricks.org/mic_manuals/astatic/d104-m6.pdf

 

[Tokin]

D104-M6 Minuteman II

I thought that too. Is this a newer model with a fixed potentiometer stem? All the minuteman 2 examples i see have the white plastic star like shaped one piece knob and shaft and astatic is raised lettering on the face. This one is a bit different with the printed nameplate and a 2 piece stem and knob but still using the 7v battery.

 

[SuperLid]

I thought that too. Is this a newer model with a fixed potentiometer stem? All the minuteman 2 examples i see have the white plastic star like shaped one piece knob and shaft and astatic is raised lettering on the face. This one is a bit different with the printed nameplate and a 2 piece stem and knob but still using the 7v battery.

Yes