Looks like a cheap knock-off of a Gypsy Hardwick No. 120. A real Gypsy Hardwick would say so on the top.
The "value" will depend on were you're trying to sell it. In many parts of the USA (and possibly other countries) there are laws prohibiting using this type of stove due to air quality issues. Not that that would stop some people from using it, but it would likely reduce the value.
Total swag, but perhaps somewhere between $25 and $50.
Here is an auction for a real Gypsy, final bid was $48
https://www.ebth.com/items/4237420-gypsy-hardwick-number-120-cast-iron-stove
Notice the better quality fit and finish, especially in the legs. My guess, what you have is a Chinese copy, probably sold in the last 10-20 years.
My opinions are barely worth the paper they are written on here, but hopefully they can spark some new ideas, or at least a different train of thought