Narrowing it down.
Thanks for the input, Rhett, Brian, and Frank.
I'm glad you quoted that text, Brian; I hadn't quite grasped that when I first read it, but you made it clear: It's definitely not a W575-1.
Right now I'm leaning towards your wet tissue technique, Frank, to rule out it being an E-121. I hope to get around to doing it in the next few days. I'll keep you posted.
Meanwhile, if anyone has anything to add, please do.
Doug
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