Key code?

[Decoke Dave]

Just been sent the key tag from the bikes (05 FZS 1000) previous owner.  Code prefix is F and five digits!  I thought all of these keys had the prefix A and four digits?  I think he has sent me the code tag from another bike or could this be correct?  Does anyone have a Gen 1 tag with a prefix of F and five digits? No point in ordering a useless key!

[tommyardin]

Can only speak about the FSZ600, both the keys for mine (Tank & Seat is one key, ignition is a different key) both mine start with an A and have 4 numbers

[robbo]

My thou key is 4 digits preceded by A.(2005)

[Decoke Dave]

Many thanks gents, just what I thought.