I may have the chance to buy an old guzzi that’s been off the road for a few years, unfortunately the keys have been lost, how would i go about getting replacement keys, or is it a case of renewing barrels and petrol tank lock etc?

I removed the ignition barrel assembly and took it to a Locksmith, thats a proper locksmith not a shopping centre key cutting service,he cut a set of keys for me that fitted the petrol cap as well, the keys are Nardi blanks I recall
I am sure some one here will know
might be worth writing to a previous owner to see if they have a spare set kicking around ?

If there is a number where the key goes in . Take that number along to a decent lock Smith with a key similar and they should sort it. I did this with a lemans years ago