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the forum has had prior discussions on the Mondial marque, do not know the actual manufacturer, suspect a contract build
have a friend with one which is also from the 1960's era
her example as well constructed with the Agrati "BRIANZA" pattern lug set, nr. 000.8030/U
livery of her cycle is yellow w/blue trim
a nice touch here is the maker's decision to opt for a seat lug of the Malaguti style. as mentioned in other posts, Agrati seat lugs were offered in a choice of three formats. one could select their pattern of choice in a bare lug without binder ears, a form with binder ears, or a form with Malaguti style plugs without binder ears as we have here.
the welded stem/bar/brake lever set here is likely from somone such as Varese...or perchance Schierano
zinc plated headset is an Agrati item
pedals appear they may be Agrati pattern nr. 000.0611
zinc finished brake calipers my be from someone such as Balilla or Super Rapid
there looks to be a marking on the head of the crankarms, would be interesting to learn how it reads
mudguards & chainguard may be from Mazzucchelli
if cycle produced for export to the anglophone lands would expect a wheel size of 26 X 1 3/8
suspect original finish may have been a red flambouyant, with a combination of UV and rust achieving the present look
some of the original colour might return in the course of a de-rusting treatment
hope you are able to take it in so we can get further imagery...
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