It is a Squat Jar, reminiscent of an ancient Eygptian style.
Try searching for apothecary jars. Also,It looks like an oil or alcohol lamp, which kind of makes sense. Some essential oil diffuser jars are also similar.
That is very close. I'm sure the leg could be cut off and ground down with some Dremel tools. Although you probably wouldn't want to ruin an antique like this. It could be and option for a reproduction.
How about making a 3D model and getting it printed in transparent resin or cast in transparent resin?
resin and other plastic might be bad idea as i`m planning on filling those with transparent gel wax mixed with green glow in the dark powder to make them into candles