My first time in Nsr World


I'm Francisco, from Portugal. I have one Nsr250sP mc28, one nsr250sE mc28 and one Honda Rs250 (for sale on ebay).
I have an issue right now: I just lost all my pgm keys from Nsr250sP mc28.
Do you have any idea how can I solve this?
Many thanks for your help!
Best Regards,
FG