As far as I'm aware there are only uncut and cut Ross bayonets of which I have both types and are photographed in my posts. I'm not aware of a 3rd type of Ross bayonet but stand to be corrected. Looking at my 2 examples it's fairly obvious to see which is the cut example and which is the uncut example. As you only have a single Ross bayonet and by looking at my examples it should be easy to figure out that you have a uncut Ross bayonet. It's my understanding that the cut version is the MK2 but as I'm not an expert on Ross bayonets I stand to be corrected. I think that the digits next to the Canadianicon acceptance marking is a number 11 and this could refer to a regiment or unit. 4/16 could be the manufacture or perhaps even the issue date but I would go for manufacture.