CT-100 Lid Match & Swap

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I have a mismatched cabinet lid S/N 504 that I am willing to swap for cabinet lid S/N 18.

Does anyone have lid S/N 18?
Does anyone need lid S/N 504?

I will be bringing my lid with me to the 2010 ETF Convention, starting April 23rd.

BTW: If you look at the last page of SAMS Photofact Set 252, Folder 11, you will see cabinet S/N 4. You will need to zoom in real close to the cabinet's upper right corner. TC