ERTWIG
At this time, I have no information about this German-based company except that they have China model horses in their line. Part of the Katzchutte company
Left: 3.5"; photo provided by Cynthia Gardner
Large bay prancing stallion
Stands 12" tall, on base. Owned by Lori Critchfield.
Large black standing stallion
Stands 9.75" tall. Owned by Lori Critchfield.
Small bay draft mare
Stands 5.5" tall. Owned by Lori Critchfield.

Braced bay foal
Image provided by Melodie Dowell who comments: Probably a copy of Beswick's Comical Foal or maybe the other way around. I don't know which came first. Beswick or Hertwig. Beswick's Comical Foal was made in 1939. I don't know about Hertwig.