Some people remove the outlet covers to paint. I remove nearly everything. The doorbell did not escape this round of painting the living room. It was a rather generic chime with a large plastic cover. Definitely not original to the house, although the brass button on the porch may be. The chime had to go.
I became obsessed with putting something back that was a little more dignified and period perfect. After a few trips to big box stores and searching online, I stumbled upon a traditional english buzzer bell at the Roxborough hardware store. While they still do manufacture these bells, I suspect this one had been there on the shelf for many, many years. It was just shy of $10.
I mounted it to a maple plaque, painted to match the walls, and wired it in place. When it first rang, Truman's feet came entirely off the floor in surprise. He couldn't seem to grasp this new noise. I realized this purchase was a 2-for-1 win. The dogs haven't realized it's the doorbell yet. While the bell may be quite loud, the dogs are still quite quiet.