HI,
it doesnt look like an 18thc example to me , it seems to be a mixture of forms , the foot looks like a firing glass ,the stem looks mid 19th at the very earliest, and the colour looks modern , the wear on the foot looks to have been artificially added as it is very bright , as if it has just occured, but to answer your question ale or jelly , it is trying to be a jelly glass from the overall form .