Rarity vs commonality and top shelf vs bottom shelf!
I would have to think its a fairly rare can, as I have never seen it before, yet there are many I have never seen before, but the question would seem to be as to what the designation would do for this can?
In order for it to attain the astronomical value of the top oil cans of today, it has to be desired by a lot of people and rarity is certainly one of the factors that contribute to that, but there are many other factors that raise the value level also.
Condition is a major factor as are the graphics and coloration displayed, and the "Kool" factor is a big player too!
I think that to be a big time can, it would have to have all of these factors PLUS having been produced in enough numbers to be known within the collecting population, yet rare enough to be difficult to obtain, but not impossible! If there are "no others" and the possibility of obtaining one is limited to whoever owns the single known example---then others won't care and won't be looking for one and there will be no market gauges available by which to factor a price!
All that being said, If you like it, put it on the top shelf and brag about how its the only one known to you! If it doesn't please you much, put it on the bottom shelf and stack something else on top of it, or use it to store your favorite screws on top your work bench!
I have one or two really rare cans like that and one has the important job of keeping track of the brackets for the trim on a Tok 36B and the other holds an assortment of brass screws! Both have prominent positions on the bench and get to be front and center because they're working! Not only that but I'd rather have my junk in an old can where I can find it instead of scattered all over, so I doubt I'll ever sell them, as they are priceless.