Pioneer Mystery Bar Mount

[Agrarian]

I just picked up three Pioneer bars having this odd (to me) mount that doesn't match anything I can find in the bar mount docs I have. The slot is 8mm wide. As you see, there are no holes drilled through for the chain tensioner pawl - it seems to be a combined oil port and tensioner hole that is only drilled half way through the bar. It's duplicated on the other side.

Can anyone tell me if this has an official pattern designation (i.e. K095, etc)? Also, I'd like to know what Pioneer models this would fit on.

Thanks for the help,
Barry

 

[jacob j.]

This is the early Pioneer small mount - they're common on Pioneer saws like the 1074, P-26, 1110 Holiday, P-28, etc.

I don't see a code for these in Oregon mount but my 1980 Windsor catalog lists these as a "PC" mount.