Not a chance of a Leica glow as it happens. I don't even own a Leica sticker let alone a lens. I think I can honestly say this is the Industar 61 glow. Or maybe the Polypan-f film glow on account of the film having no anti-halation layer being meant originally for copying movie film.
Or maybe it was such a shock that the sun was shining and The Crofter SMILING for goodness sakes, it started glowing all of it's own accord. Either way, it is nice to see The Crofter glowing.