On the top half EKM it's Deutsches Reichsheer. I think the half EKM on photo 3 is: 1. Kompanie Landes Schutzen Ersatz Bataillon (can't see a bataillon number). What I see on the 3rd half EKM is: Infanterie Ersatz Batallion 2 (no other numbers visible). I think the complete EKM says 2. Landwehr Panzer Abwehr, but the stampings look incomplete.
I my opinion the half EKM are all good. I'm no expert so I don't know what to say about the complete EKM.
I agree the half discs look okay ,the full one ............. Nein
The gates of hell were opened and we accepted the invitation to enter" 26/880 Lance Sgt, Edward Dyke. 26th Bn Northumberland Fusiliers , ( 3rd Tyneside Irish )
1st July 1916
Thought shall be the harder , heart the keener,
Courage the greater as our strength faileth.
Here lies our leader ,in the dust of his greatness.
Who leaves him now , be damned forever.
We who are old now shall not leave this Battle,
But lie at his feet , in the dust with our leader
House Carles at the Battle of Hastings
The halves are fine the full disk is probably a mistake that was period made, I would guess it was salvaged from a trash pile by a metal detector. I think the value in USD would be about $40-50 for all.
Since your only paying $75 Canadian that must be a steal (just kidding).