

Curious case at the Solido: this first version has spoked wheels while the later version has convex disc wheels, thus reversing the chronological order of variants.
The model car has 4 variants:
- 1st version: grey baseplate, spoked wheel rims. The box is type 4 (light yellow with blue drawings and reference on the tabs).
Colour of the 1st version: orange red.
- 2nd version: grey baseplate, convex disk wheel rims. The box is type 4 (light yellow with blue drawings and reference on the tabs).
Colour of the 2nd version: scarlet.
- 3rd version (pictured): grey baseplate, chromed spoked wheel rims. The box is type 5 (yellow with red drawings and reference on the tabs).
Colour of the 3rd version: orange red.
- 4th version: black baseplate, chromed spoked wheel rims. The box is type 6 (red with white and black drawings and the word solido with the letter l without curl).
Colour of the 4th version: orange red, dark red, bright red.