Here are some pictures of the embossing on that WT #1.

Note the period after the 1. This is listed twice in the book (060 and 070), but NOT with the {number} above the main line of text.

The color is also a little funny for one of these; it appears greenish under fluorescent bulbs, and bluish under daylight. I'd still tend to call it a variation of light aqua, but that embossing is what's interesting. Anyone else have a WT #1 with this specific embossing?