Here's a late 1890's Pierce that I have at work. I could not find any serial numbers. Sorry for the lousy pictures, but it's 15' up in the air. Notice the sub badge below the badge is actually a decal.
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I'll say this one as well is a 1897. Same early badge, internally threaded bottom bracket shell, same size tubing, same cranks, same head parts as the one I just posted.