this is close....

Here is a link that might be useful: towel bar

Another similar one from Lowes. I actually have this one and it's very sleek, but no black stripes.

Here is a link that might be useful: Towel bar from lowes

Thanks for your suggestions. Just thought I'd try one more time before I totally give up on this.

Another close, but no cigar, is the Dorset from Glacier Bay:

Where did you find the picture? Or is it one you took? I'll keep looking. I love a puzzle.

If you can't match it, including the black stripes, maybe you can match the towel bar itself w/o the stripes and use something to add your own black stripes. Like tape off the width and use matte black enamel or craft paint, or whatever finish they are. If I was doing that, I'd maybe even go over the original ones so both would have matching stripes. Or, what are the stripes made of? (Now, I'll have to start looking, too.)

You guys are great. The picture of the towel bar is from my bathroom but I'd like another one to match it. There doesn't seem to be a brand logo anywhere on it. It was already there when I bought the place.

The stripes are actually two metal rings, but they're flush with the surface of the bar.

I have another possibility. Delta seems to sell something similar, but I can't tell from the picture and I can't find a store that has it in stock.