What Is On The Back Of This Scott #158?

When looking at the back (see below) I see even spaced dots that don't look like a grill, but I don't see this on other A46a stamps. My 2014 Scott Specialized refers to an "End Roller Grill" under 158e (with grill), but Stamp Identifier makes no reference to a grill on 158, nor can I find "End Roller Grill" defined in the stamp glossary. I'm presuming this is simply a 158 (no grill), but would appreciate confirmation.

Sorry, probably should confirm 184 instead of 158.

Can you re-photo the back taken with lighting coming in at aside angle please. It will better show what it is you are discussing.

Here you go. Definitely not a grill, so 184?

STAMP flat, LIGHTING from a side angle.

LIGHT.......................LIGHT
..\\\\\\\\......................///////// <<use even lower angle.
..........._________..........<<flat stamp






See perhaps: https://www.stampcommunity.org/topi...PIC_ID=28561

I believe you see the front impression through the fairly thin paper?
The dots may be from the cover the stamp was on?


Peter

Thanks Peter. Probably so.