Looks like a speedster, can be seen on the low front windscreen and on the badge on top of the fender wich say's "speedster" i can't see on the phot if it is a Carrera speedster wich should be written at the back of the car.
If you enlarge your photo maybe you can see if there is an Carrera inscription just below the engine cover. if so it is the rarer and very expensive 356, about 140 carrera speedsters were made. Altough the Porsche Speedster exists in various number of Replica's.