Ullstein-Schnittmuster V 34 - BildhauerKittel

Based on the style of a women's dress pattern that was part of the same lot, my guess is the early 1920s.

Since I have no knowledge of German, I've relied on Google Translate to help me out here, so this post will be of a somewhat minimalist nature.

This is, apparently, a "sculptor's coat,"  which may be as generic a term as "artist's smock," or "shop coat." Available in sizes for both men and young men, this is a nice example of its kind.  Gathering the fronts and back into a yoke provides some additional ease, so that the coat could be worn over a suit jacket or a heavy sweater.  And you can't go wrong with four pockets!

Ullstein Verlag, a large publishing house based in Berlin, published Die Dame, a ladies magazine, and this line of home sewing patterns - a business model similar to that of McCall.

It's easy to imagine this smock being worn in the studios at the Bauhaus.

This perforated, unprinted pattern has been used.

Butterick 2360 - Women's and Misses' Work Garment

1940s (World War II)

It's hard to think of a more generic description than "work garment." Simplicity called their similar pattern a "Slack Suit or Coverall,"  but the concept is largely the same - a shirt and trousers united at the waist.  Butterick's solution to the drop seat is to sew the belt to the top edge of the trousers, with the shirt being buttoned to the trousers only at the side back edges.

In the description, Butterick advises us to "Note the large utility pocket,"which is the very long breast pocket on the shirt, with its convenient pencil slot.

Even though Butterick's copy department thinks that the sleeveless version is "perfect for your outdoor life," the illustrator decided to show the lady holding a pipe wrench, an implement not generally required for "outdoor life." I can imagine the sleeveless version being worn over a pullover sweater during the winter.

For the photographer's visit to the plant, this young lady has layered a white shirt with her "work garment:"

This unprinted pattern does not appear to have been used.