At first I have to admit that I am not sure about the type. The scarce literature on Presto shows mainly the pre-WW1 cars with flat oval radiators and the well-known Typ D which started in 1921 with a chromed vee-shaped radiator of a different design than the puzzle car's one. Only Gränz/Kirchberg show a picture of a 1914 8/25 PS Typ P8 with a v-shaped radiator similar to the above. The puzzle car looks bigger than the Typ P8, so I am tempted to give a preliminary identification as a late 10/35 PS Typ P10 or a 14/40 PS Typ P14. If anyone knows better, feel free to comment.