Sorry, Jeff, I didn't mean to slight your earlier posts.
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No slight, just thought you might not have been aware - I closed that string a long time ago. But site exploration is encouraged - tons of stuff lying about on this and so much else
As Mark and Ric have pointed out, we have some fair estimates - but it's darn hard to get to brass tacks without the bird or without a crystal clear picture of the patch.
Somehow I get the idea Earhart didn't care much for good pictures to be made of the patch - and then again, it was only installed just before she left Miami. For whatever reason it didn't get much detailed public attention - which makes it all the harder for us now.