antique transferware china tea or coffee set, flowers and butterflies, vintage Germany?

Unmarked antique transfer ware porcelain coffee or tea set, with delphite blue handles and milti-colored floral pattern. The pot measures 11" tall, there's also a cream pitcher and a covered sugar bowl. All of these pieces have a wear to the gold trim, but only the creamer has any other damage (a tight hairline crack to the bottom).

We're guessing this set is German, but it could be Bavaria, or even England or the USA. It seems like this should be an easy pattern to identify, since the butterflies are a little uncommon... but I haven't had any luck!