Hello,
Currently on ebay are two photos of Macchi L.3 flying boats at:
Macchi L.3 705*
https://www.ebay.it/itm/765-3-WW-1-A...gAAOSwHB5eSba4
Macchi L.3 M.4874
https://www.ebay.it/itm/765-11-WW-1-...EAAOSw4wZeSbis
I would welcome opinions about what the last digit on the first machine is.
Regards,
Clint