Speeding Ticket in Italy from almost a year ago

I was in Italy (Florence) 11 months ago and had a rental car. I recieved notice of a speeding ticket (over 10 kph, but under 40 kph) in the mail a week ago. The fee is $375 euro (actually 388 euro when I go to the payment page). The information in the notice instructs me to go to info.myfines.it which a little googling tells me that this is the legitimate site for ticket collections (but boy does it look janky). Before I consider paying:

• It looks like the fine would have been only 150 euro if paid within 5 days, 201 euro if paid within 60, and 375 euro thereafter. Even though the ticket seems to be from nearly a year ago, I just got the notice. Is this legal?

• There was no photo evidence despite the ticket stating "camera". I did request photographic evidence via info.myfines.it but not sure how long that will take. Do they have a legal requirement to provide evidence?

• I heard there is a 5 year statue of limitations on this. If I am not planning to go back to Italy within the next 5 (now 4) years, is there really anything that can happen here?

• I go to Europe a few times a year and have gotten 1 or 2 speeding tickets over the course of decades and have paid them promptly. But I've never gotten one almost a year out and with such a high fee. Would this realistically cause a problem if I ever wanted to rent a car in some other European country?

Thank you for any input you may have.

Thanks.