Yes, it's a Singer stool. However that is not the cabinet it goes with.
This is the cabinet the stool with the round corners goes with. The cabinet has the exact same rounded corners that match the stool
I'm at work so can't run upstairs and take a picture of the stool that goes with the square sided desk cabinet. On that one, the stool as the exact same square corners that match the desk.
Here is a better picture of that style desk
