These plastic space toys are from the Serie Espacial by Payva of Spain.
They aren't that big as you can see from the Euro next to this one.
The four vehicle series comprised of: 1. flying saucer, 2. space glider, 3. space jet and 4. rocket [my names] and were numbered as such rather than being named on the boxes. The number was ink stamped on the white panel on the box end as shown below with the number 2.
Toys 3 and 4 are not pictured here.
The red space glider above links this series to Apollo Moon Exploring by Imperial Toys as its the same, although the Spanish version is larger I think [I don't have the Payva toys].
Colour variations may exist of the Payva range. As we have featured many times, several toy outfits released this series in their own name, such as Blue Box, C21st Century and Ahi. They all had different packaging and the decals were specific to the brand I think [this needs checking].
The red glider above was released in different sizes and forms on its own by many toy companies such as HG, Imperial and as a Blakes 7 spacecraft.
Do you have any of these toys readers?