Steering box date code identification question

[gdrill]

I got an extra manual box with a 68 Barracuda. I'm pretty sure it doesn't belong to it but was wondering about a couple things. When I tried to decode it the steering arm came up as 73-74 Cuda / Challenger. It has a number 3402730N16190 5. Only the first 7 digits did anything in my search. Don't know what the rest of it means?? Then I went onto the box. It is 2537349 6 and what I believe is the date code is H12 4J. Now this part number comes up with a few various models, so I was wondering how to read the date code to narrow it down. More of a learning question than anything and if I ever decide to sell it it would be nice to know what it is or was for.
Any date code gurus out there? I think the "H" is for August!!

 

[Rocky_JS]

H12 I would be Aug 12th. They didn't use I and went to J for Sept. However 4J could also mean 4th quarter of J=1973 (again no I) I doubt they would use quarters from steering gear though.

With this said I do believe the steering box would have a star wheel year month stamp in it with the 2 digit year being in the middle. Not sure exactly where you got these numbers from.

 

[gdrill]

Thanx Rocky. The date code is stamped onto the end of the wormshaft adjuster locking ring. I just wanted to have an idea if I take it to a swap meet to let a perspective buyer know. I imagine it's likely a 24:1 ratio box. I'm hoping the Barracuda has the 16:1 in it.