What kind of camshaft is this?

[kiddsm95]

I bought these cams from a local DSM'er and he said they were BC 264/264's. The ident number on them is 4F23. Anyone know what these actually are?

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[RedZonePR]

any other symbols or letter?

 

[jrohner]

I've never even heard of BC264's. They start at 272's.