I'll bet your were wondering if anyone was going to reply? I saw this the other day, but only tonight was I able sit down at a screen larger than my phone's and have a look at it. I don't think it's a double transfer. According to Neinken, there are only three double transfer positions for #24s. Positions 8R8, 10R8, and 59R9. The plate 8 positions are top row, of course, and this is not. They involve doubling in the guide lines and top ornaments. The plate 9 is a very nearly complete doubling of the bottom ornaments (and in fact, not a double, per se, but a different relief getting rocked into it). By the left side of the bottom rule extending past the post of the E in ONE and by the scratches in ornament R, this is a B relief. Row 2 only.
Here's a detail of a 3R8. I think what you are seeing has a more modern origin: jpeg compression artifacts.
