Planter ID Help

I've got ours right down to the small square boxes on the back and the book. 

And, the fertilizer boxes on the front.

It's what we used when I was growing up.

I think Captain Dan has one that he acquired awhile back.

Want a pic? Send me your number.

I just pulled out the operator's manual.

It says on the front: 

333 series 

144" - 176" - 244" Frames

So Ted, I'll bet that if you go back and look into the 333 series on the site, you'll probably find what you're looking for. 

frame would come up as in markets frame or marker latches.

The last parts book they were listed in was 79001730 in 1970.

The book is titled 500 600 tool bar mounted.

The units are 50 series with what looks to be standard runner openers.  The pic is fuzzy so I can't see if it was a hill drop or not = probably not.  Later they called the 51 series units.  As on the later 70 series the 71 designated  runner and 2 as in 72 designated double disc.   The units had two different hoppers - a std or tube metal hopper and a high capacity funnel shaped hopper.  The  markers both lifted when the planter was raised and then the operator pulled a rope which release a latch pn 700341996 which dealers stocked by the dozens as we called them 'gate post latches'.  (similar to the 66/72 gate post pulley on the back of the pull types)