What model is this Case planter?

[UrbannGuerilla]

There's no tag or identification that I can find.

 

[kneedeep]

Not sure but definitely a antique

 

[UrbannGuerilla]

Someone on another forum said it might be a Case K160, the last model planter that Case ever made. If it is, then the last unit was made in 1969. I searched for that model and I can't find any pictures of it.. I can't find literature for a K160 online or for sale.. anywhere. So without knowing the correct model of this planter, I can't look to see if there are replacement wheels that would fit it, at an affordable price, and I don't know if I'm looking for the right literature. I just recently realized I have 2 types of seed plates, some 24 cell, and a few 16 cell. I'm pretty sure the 24 cell plates are correct for this thing, as it plants peas normally... but if I wanted to change the ratio to 16 cell, I don't know how to do it. (Maybe that will be fine, just look at 24 cell plates in the future) I think some planters have a different sprocket to change the ratio, others seem to have a pin system where you pull a pin out and possibly put it into another position to change the ratio.. and without knowing what this planter model is, I can't look for any of that info. I did look under the planter and around the gears for a pin that could be pulled, and I don't see any such thing.

Sorry for the long rambling post, I'm just trying to figure this out and provide all the info I can incase someone reads this and knows something that would help me.