acrosscenturiesandgenerations:▪Portable diptych sundial. Maker: Hans Tröschel the Elder (German, 154


acrosscenturiesandgenerations:▪Portable diptych sundial. Maker: Hans Tröschel the Elder (German, 154
acrosscenturiesandgenerations:▪Portable diptych sundial. Maker: Hans Tröschel the Elder (German, 154