A James Swan mystery tool - was this a chisel?

[nz44tool]

Hello, wrench twisters (and chisel-pounders) - I have a nice old James Swan tool that is puzzling me. I suppose it could have started life as a mortise or keyhole chisel, but it doesn't look like that. A burnishing tool, perhaps?
Anyone?
Thanks in advance!

 

[Firebrick43]

Yes it was a mortice chisel. Sort of looks like someone made it into a round nose grooving tool for a wood lathe?

 

[nz44tool]

Thanks, Firebrick 43 - I think you're right. I suppose I could make it back into a chisel.

 

[Miss the Pontiacs]

I have no idea. But it would be a beautiful tool shone up.

 

[nz44tool]

I have no idea. But it would be a beautiful tool shone up.

Agreed!