There is a missing section that broke off, about 1/2" or so. Is this part #26-366 on page 9 of your Pivot Bar list?
Tom from SWISCO responded:
December 1, 2016
The 26-366 certainly looks similar, but it looks like the tip of yours broke off, so I can't be sure. As long as the style and dimensions match up, though, I see no reason why it wouldn't work.