Yes this was the same case that Seth used for the #30 Regulator and they also made a double dial calendar regulator but I don't remember the ## and the book is down in the shop. Seth Thomas made a lot of the cases (if not most) for Self Winding Clock Co. and for Standard Electric Time. They appear to have made some of the earlier Stromberg Electric cases too.
I am restoring an earlier SWCC #18 in Oak at this time but its about a month or so before it will be presentable ....... ds
Here's the Seth Thomas oak case calendar, damage to the right bottom area, I think the weight dropped when the cord broke some time. The damage was there when my Dad bought the clock some 30 years ago. It had a coat of a vile green paint on it which I removed. It's buddy is a hanging Eclipse model.