I think they are Canadian.  
 
> Date: Thu, 11 Feb 2010 03:14:22 +0000
> From: isaacson@...
> To: pens@...; fptalk@...
> Subject: [ZossPens] PIC. A most unusual 1930's (?) - 1940's Sheaffer
> 
> 
> Picked this up a while ago. Goes well with my *striped* gray non-WD version. Daniel has a WD brown striper. A most unusual Sheaffer, one most here perhaps have not seen before. It is imprinted "Sheaffer" . 
> 
> http://vacumania.com/penteech2/sheafferblackwasplike.jpg 
> 
> regards 
> 
> david