Looks to me like a dress bayonet blade married to forestry fittings.
I am no forestry expert (what say you, Gary?), but this doesn't look right to me.
John
Not one that I recognise as a legitimate C&J pattern, I suspect that John is right in his assertion, it does look married together to me.
Gary
On first glance that's exactly what it looks like to me, standard KS98 blade cobbled together with Forestry fittings.