Opinions on SB L/55

[AUSGANG]

The mark looks suspect to me, no box around the characters....

[AUSGANG]

obverse

[streptile]

Good one, no problems (apart from the obvious...)

[AUSGANG]

Thanks! I assume that there are also legit L/55s screw backs where the mark has the box around it? Can't tell a thing from the database here.. Tried to search info but just got more confused...

[ben bijker]

They come with and without box.

Without the box is the same as used on their pinbcacks.
I don't know if there was a reason for that, but on the SB's you can find both marks.