Gus,
Do you know if another company acquired the rights to the name subsequent the closure of 1963?
Have seen two bicycles in classified adverts which were clearly a good deal later yet were transferred as Ideor. Both were so modest I cannot imagine someone bothering with a counterfeit.
Here is one currently on offer:
Bici da corsa Ideor anni '60 - Biciclette In vendita a Genova
Perhaps this topic has been discussed on the CR list?