Jeff,
I am currently updating the ACOC 428 Frua Register for publication to the membership. I saw your photos of CF 26. In previous registers it was listed as CFX 26, but checking the original factory ledger, CF 26 is indeed right. It was sold to a chap in Manchester here in the UK but I have no further contact until your photos. Can you share any further details, and can send Private Message to me for confidentiality. Hope all is well with you, Andy.