I never use tape on wood finishes. This was there from who knows when. My SIL who gave us the 9W-7 Treadle a couple years ago wanted one that used common components and had a back tack on it. We saw this 66-14 on on GW and she bid on it. Miriam was kind enough to pic it up for us and hold it till she trecked through IL and we could meet up with her.
I'm cleaning it up for my SIL. So far I've found very little this machine/cabinet will need. Just that piece of tape and some general cleaning and a new belt.
Joe