I'm not knowledgable, but it reminds me of an Orrefors vase I got in Sweden, where the Orrefors craftsmen will take vases that have an imperfection and etch a design to eliminate, incorporate, or otherwise hide the flaw. I'm sure I bought mine at the factory store, but it does not say Orrefors on the bottom. Yours is simply lovely, I'm sure you enjoy it!

Chickweed, Stellaria media, a cool weather annual weed. Very easily pulled up but do it before it goes to seed!! Also edible if you care to get rid of it that way :-)

Paul: Shut off the water supply. Remove the handle, the nut behind the handle, then put a pipe wrench on the remaining nut right in front of the valve body. Twist the guts of the valve out and you'll probably find a small screw holding a failed small black washer. Replace the washer and reassemble.

Unfortunately I didn't the option to add any photos to my original post. It (the option add photos) only showed up now in my reply.