Thanks for the responses!
I didn't know that type I could have such strong dotting on the nose... my other type I's are so faint by comparison. As are the lips, and toga lines. But... maybe this is just my first type I that isn't horribly faded with age! I checked and couldn't find a watermark, but that doesn't mean it isn't there.
Great guides, Steve - thank you! I'd used another in the past, but it wasn't as well-detailed and organized as these.
Oh, and that pic was actually a photo, James... for some reason my scanner was capturing the image with an incredibly exaggerated hue... still not sure why, as it's operating properly now. So I scanned in this lot of A140s just to look at them, side by side:

A much bigger version of the image is here (if you click on the magnifying glass icon you can make each stamp about the height of your screen):
https://picasaweb.google.com/104363...211148356578My IDs on these was:
Top row, L to R: Scott 463 (carmine I, perf 10, unw.); the stamp originally posted above, Scott 406 (carmine I, perf 12, unseen w.190); Scott 527 (carmine V, perf 11, unw.)
Bottom row, L to R: Scott 499 (rose I,* perf 11, unw.); Scott 528A (carmine VI, perf 11, unw.); Scott 528B (carmine VII, perf 11, unw.)
* If this were pale carmine red, it would be a rare Scott 461. My Wonder Color Gauge doesn't have pale carmine red, but it's a dead-on match for its sample of "pale red tint," much more so than its "rose tint." I wish I had some other pale carmine red stamp to compare it to... is there a better or different color gauge than Wonder? There are so many colors listed in Scott that it doesn't have (though it may have equivalents using different names; I just don't know what those equivalents would be).
Mind you, anywhere that it says "unw" (unwatermarked) might be a mistake on my part; just because I can't find them doesn't mean they're not there. If anyone cares to check my work, please do. I'd love to see if my IDs are right or wrong. If I had stamps already correctly IDed, I could compare stamp to stamp, which seems to be one of the best means of IDing such variants and determining just what shade of red I'm looking at on my dozens of A140 2c's. The Scott catalogue's guide to the different types are often a bit vague to me.
I guess I also need to get a proper watermark detection kit, because I've only been able to see some of them. Can anyone recommend a favorite method or product? I'm wondering if it's heretical of me to admit that I've been um... using lighter fluid in a black tray.
Again, thanks for the responses and great information!
Phobrek