I think that's a 2nd generation #6 buttplate Joe? The first was a heavier German with the top prong removable, as it was a screw that looked like the old percussion picks, and held the plate on. 
Then this style you have. Both had the flat bottom buttstocks.
The 3rd and final version was a lighter buttplate and stock that had a rounded bottom to both stock and buttplate.

The other German style:
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The final style:
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I've found the Cody actions and parts are very close to originals, but most other parts like stocks and buttplates are not that close.

Cody was pretty loose with the model designations, so their #6 wasn't always even close to Marlin's #6. I did indeed have a "Cody Ballard #6" and it was pistol grip, and had the ball & spur lever. But it was a Marlin style crescent buttplate, not even a schuetzen buttplate.

Coming along.

Looking good, Joe. Nice welding, what technique did you use?
Chuck

Thanks, Chuck. 6011 stick rod.

Got the lower prong bent down to match the angle of the original plate. Close enough for this cowboy.  I was talking with Dave Casey today and he told me he made the mold for these repro plates and that the plate he copied came from an original #6. Think he said it belonged to Skip Epp? 

So there must be different size plates on the same design. I like the larger plate when I hold it offhand.

Yes Jack, JG Weld for sure!    Didnt want to swoop the stock up to fit the smaller plate. Just wouldn't look right.

This is a Ballard with a Winchester Helm like stock, and an aluminum Helm buttplate. Aluminum is light, easy to work with and polishes well. Does anyone out there make aluminum buttplate castings? 

ssdave   Thanks for the insight and clarification. Usually pretty good at putting two and two together, but not this time.