Can you help me recognize this fuel tank?

http://imgur.com/a/wruGNq1 The bike is a moto guzzi v65 but the tank isnt oem, can you help me find the original bike if theres one. via /r/CafeRacers https://www.reddit.com/r/CafeRacers/comments/bmqm7w/can_you_help_me_recognize_this_fuel_tank/?utm_source=ifttt