This boxy bathing beauty doesn’t look much like your typical doll—she’s equipped with a key-wound, spring-loaded mechanism that allows her to actually do the breaststroke! Patented in 1878 by E. Martin, Undine, as she was named in the patent, probably wasn’t meant for children. Fanciful mechanical toys such as Undine were likely too expensive for child’s play and were instead used as a form of entertainment for adults during parties. While we don’t think she crossed the English Channel or won any medals for swimming in the 1896 Olympics, this Victorian mechanized swimming doll is certainly a noteworthy gal.

Want to see Undine race Missy Franklin or Michael Phelps? We do too, but unfortunately she hasn’t been wound up in quite some time. We did, however, find some modern takes on the swimming doll — no winding required — she takes AAA batteries and has a built-in sensor!