Picked up this locally.  It looks good to me, but I am far from expert on these.  It came without a nut and washer and none of the available nuts I have fit.  The threads on this EGA are coarser than the others I have.  Is the thread pitch a manufacturers option or is it a date thing.  I will appreciate all you can tell me about this piece.  Thanks, keith

 

Looks fine...1943-43 is the period the dual hallmark was used

 

Seems like those two bronze spots on the rear were intentionally made by removing the finish with solvent for some unknown reason

Thanks Brig for the reply.  I wonder about those spots also.  Someone could have cleaned it looking for the hallmark.  Or, it could have been mounted in a display and those spots were caused by mounting adhesive.  Since there is no nut with it the display idea may be the case....?   They spots don't look like they would be a wear point.  Thanks for dating it. 

 

Is this an Officer's or Enlisted badge?

 

Regards. 

That is an officer's emblem. The applied continents and separate wire rope are dead giveaways. 

Thanks Jason, appreciate the response. keith