You might get more response from the vintage and classic bike thread. This thread is specifically recumbents, trikes and HPVs. You could try the search facility but you might need more posts before you can use it. There is a post on Colinelli there, though it's dated 2017. Perhaps the Mods can redirect your query there
It seems likely that your frame could have been made by Angelo Colinelli who was a French professional rider in the early 1950s. This link will give you a heads-up on him:
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