It is an understatement to say that Type 7 (Battushig E06) is complex. The variability is great.
At present, a working classification is:
Type 7.1. - screwback
Type 7.1.1. - screwback, numbered - Low = B-5/High = B-1266
Type 7.1.2. - screwback, unnumbered
Type 7.2. - pinback
Type 7.2.1. - pinback, numbered - Low = ??/High = ??
Type 7.2.2. - pinback, unnumbered
There is also (to make things worse) a difference as to whether the border post is two-colored (red and blue) in the stripes or has only red stripes. (Or have the blue just gone "missing in action"?)
As a specimen, a Type 7.1.1.
At present, a working classification is:
Type 7.1. - screwback
Type 7.1.1. - screwback, numbered - Low = B-5/High = B-1266
Type 7.1.2. - screwback, unnumbered
Type 7.2. - pinback
Type 7.2.1. - pinback, numbered - Low = ??/High = ??
Type 7.2.2. - pinback, unnumbered
There is also (to make things worse) a difference as to whether the border post is two-colored (red and blue) in the stripes or has only red stripes. (Or have the blue just gone "missing in action"?)
As a specimen, a Type 7.1.1.
