Benjamin Franklin 1cent Stamp

Can anyone help me? Is this stamp worth anything?

Welcome.
You can learn more about your stamp here
http://www.stampsmarter.com/1847usa...ntifier.html
Don

All of these issues that are perfed on all 4 sides are perf 12, so we know then it can only be:
331
357
374

The 357 is on "Bluish" paper, and this one is not. So that just leaves:
331
374

331 Is double-line watermark
374 is single-line watermark

So you'll have to check it for a water mark (some part of any of the letters USPS in either single line, like the font of this text, or double line. Google for that, you'll see what it looks like).

In either case, it's a very common stamp. The 331 used has a CV of 40 cents, and the 374 used has a CV of 25 cents.
Happy stamping.

The Feb 3, 1910 cancel ID's this as 331, since 374 is not known until extremely late in 1910.
The double line watermark is fairly easy to see in fluid on these stamps, but soaking off the residual paper would be necessary first.

You will need to soak the stamp in warm water to remove the paper attached on the back before searching for a watermark.

The adhering paper must be soaked off to make it possible to see the watermark.

Good point John Becker. I tend to avoid using cancellations as "proof" of ID, but in this case, I don't disagree. So no need to watermark, it's a 331.
Now if it was a high value stamp, I'd be examining much closer, if the cancellation were authentic or not.