It seems I have found these in groups of six lately. HG 162 [070], Hemingray 134 [020], Hemingray 134 [030] with script embossing, HG 133 [070], HG 133 [020], Brookfield 133 [520]. There is also a fly on the wall, top brick on the left. It's probably Pat Barkwell in disguise, waiting to swipe this newfound glass. I can see him being shifty like that. He likes these dirty ole signals. Or, maybe it was just a real fly, and I simply attract flies. That could be that case, too.

After running this picture through my super duper pixel magnifier program, my suspicions were confirmed. It was indeed Mr. Barkwell. [id=261533261] to see the evidence.