The 1723 Musket, which is the first German made musket, were made at the Potzdamn Arsenal. The first 1723 muskets were basically the same as the 1713’s except for the locks which looked very similar to the 1740 model only more banana shaped. In the later 1723’s you will notice a gradual change to the 1740 type stock design. Most of the 1723’s were altered to the shorter 41" barrel length of the 1740’s.