Ok... here we go....
It's a common misconception that the stovetop waffle iron was invented in 1869.
It wasn't.
I can explain the source of that misunderstanding, but that's another conversation....
Below is my Rathbone (1857)...
...and one of my Christian Keiffer waffle irons (foundry existed from 1851 - 1859)....
...Even before that, here's a Nathaniel Waterman, the first patented waffle iron (patented in 1853). Unfortunately, this one is missing its base.
HOWEVER....
Even these WI's from the 1850's aren't truly the first stovetop waffle irons (after you collect WI's for a while, you start to see the evolution of them).
It was around the 1810's that the wood-burning stoves started gaining popularity and the WI's were adapting to them.
Take a look at this one. You can see how the WI is evolving from the previous generations, like yours, which were cooked over an open fire, to the next iteration of being cooked on a stovetop. Here you see longer handles, still remnants of the over-the-fire style from hundreds of years prior, but side-hinged (not scissor-hinged), and on a circular base (to be used on a wood-burning stove).
After that style, the long handles disappeared (I'm sure that they were annoying to work around as they extended forward from the stove; probably bumped into them a lot). You'll also see that the base has no handles (how do you pick it up from the stove when it's hot?)
So the long handles were removed, and handles were added to the base...I could go on about design improvements (and some day I will). But the bottom line is...
Stovetop waffle irons existed before the 1850's and were an evolution of over-the-fire waffle irons like yours. In the early 1800's the over-the-fire scissor-style were probably still being made, but at the same time, some newer designs like the one above, were being invented for the new wood-burning stoves.
This is why I say that your WI is from the early 1800's or older.