Mystery chain wheel

[rustynuts]

Can any of you learned gentlemen identify this chainwheel? I acquired it some years back thinking that it was a six keyway wheel for a 2 1/4. It has the same diameter and chain pitch, but as can be seen in the third photo it (on the left) has a different offset. I have looked through some of the parts catalogues for other series engines, but can't see anything like it.

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[jkhackney]

Well, I checked against photos, and it's not like the one on my 2L either. I didnt' take photos when I worked on the timing of my 2.6L