2 3/4" X 4" (70mm X 102mm)

(skirt) V A

Picture courtesy Bob Berry

2 3/4" X 4" (70mm X 102mm)

No markings 

{found in Morocco}

Picture courtesy Bill Ostrander

2 3/4" X 4" (70mm X 102mm)

(skirt) V A

Picture courtesy Don Mecklenborg

2 3/4" X 4" (70mm X 102mm)

(front skirt) ISOREX / 5

(rear skirt) 35/3            

Picture courtesy Don Mecklenborg

2 3/4" X 4" (70mm X 102mm)

(skirt) V A

Picture courtesy Don Mecklenborg

2 3/4" X 4" (70mm X 102mm)

(skirt) V A // 35/3

Picture courtesy Don Mecklenborg

2 3/4" X 4" (70mm X 102mm)

(skirt) V A

Picture courtesy Don Mecklenborg

2 3/4" X 4" (70mm X 102mm)

(front skirt) L'ELECTRO VERRE

(rear skirt) 35.3.N                       

Picture courtesy Don Mecklenborg

2 3/4" X 4" (70mm X 102mm)

(front skirt) ISOREX / XII

(rear skirt) 35/3               

Picture courtesy Don Mecklenborg

2 3/4" X 4" (70mm X 102mm)

(front skirt) L'ELECTRO VERRE

(rear skirt) 35.3.N                     

Picture courtesy Don Mecklenborg

2 3/4" X 4" (70mm X 102mm)

(front skirt) L'ELECTRO VERRE

(rear skirt) 35.3                          

Picture courtesy Don Mecklenborg

2 3/4" X 4" (70mm X 102mm)

(front skirt) ISOREX

(rear skirt) 35.3       

Picture courtesy Don Mecklenborg

2 3/4" X 4" (70mm X 102mm)

(front skirt) ISOREX / VIII

(rear skirt) 35 / 3                

Picture courtesy Don Mecklenborg

2 3/4" X 4" (70mm X 102mm)

(front skirt) ISOREX

(rear skirt) 35/3       

Picture courtesy Don Mecklenborg

2 3/4" X 4" (70mm X 102mm)

(front skirt) ISOREX

(rear skirt) 35/3        

Picture courtesy Don Mecklenborg

2 3/4" X 4" (70mm X 102mm)

(front skirt) ISOREX / IX

(rear skirt) 35/3               

Picture courtesy Don Mecklenborg

2 3/4" X 4" (70mm X 102mm)

(front skirt) EIV     

(rear skirt) 8 / 35.3

Picture courtesy David Kresz