I have forsythia blooming in the kitchen (I cheated and picked it for forcing inside last weekend. My family thinks nothing of it when I say on a cold February day, "I'm going to pick some flowers." They know me well),
The maker's is pretty clear: C M. Looking online, I found that this was the mark of a silversmith from Dublin named Charles Marsh, and based on the I or the H (assay mark, I believe it's called) the item dates to about 1828. The other marks are not as clear--one looks like an anchor, the other? If it's Irish it should be a crowned harp, but it's too hard to make out. It looks more like a head to me.
Other than that, and some general information about Wedgwood (also called jasperware) I didn't find anything else. We wondered what the bottle was for (there is cork in the lid), and more information about Charles Marsh would be interesting too.
Can you shed any light, or point me to a place to learn more? It's a minor history mystery, but interesting. And will help Reta determine the value of her little bottle.