Early models show that many design changes were made before it was built. Most notable, the original designs have Wenceslas in a soft and bulbous fur hat, as he is often depicted. This was changed to a copy of the helmet of St Wenceslas, which is part of collections connected to the crown jewels at Prague Castle. The origins of the helmet, though, are not clear and it is uncertain whether it actually belonged to Wenceslas.