Is this my born with transmission?

[HustleRussell]

VIN 124379N610048

[HustleRussell]

Partial VIN

[HustleRussell]

Tail housing.

[HustleRussell]

Side cover.

[HustleRussell]

Main case.

[HustleRussell]

Assembly stamp.

[HustleRussell]

Trim Tag.

Thank in advance.

[bcmiller]

Russ yes it appears to be.

H = HD Muncie 3 speed
9 = 1969
B17 = February 17 (trans assembly date)
B = 2.42 first gear ratio

[ko-lek-tor]

Pretty cool Russ!

[HustleRussell]

I had a Camaro car guy stop by the other day. So I was telling him my 69 was a factory SS. And he was telling me the only way to verify a 69 SS was to have the factory paperwork. I don't have any paper work, but I'm thinking from CRG info a late February factory stamp MC1 is proof of factory SS. So I reckon my real question for the experts is the partial VIN stamp for real?

[bcmiller]

He is wrong.

Partial VIN on the transmission seems real.

I don't remember if you have given us any details on the engine and axle.

[KurtS]

Yes, it's original.
Yes, that MC1 would confirm SS-ness.  The BM rear axle also supports that (but is less definitive).
The L65 used a M15, not MC1. I've seen a few L65 with a 12-bolt.