Steve Maxon of Max-Cast in Kalona reproduced the statues in bronze.
“The statue being reproduced for the auction stands approximately 28 inches tall and has an armspread 27½ inches wide. It will be made out of a base of gypsum cement with fiberglass and acrylic reinforcing and then covered with a bronze powder, giving it the appearance of bronze.”
https://globegazette.com/news/local/article_a092433c-b7c8-11df-a977-001cc4c002e0.html