I received my information back from the Floyd County Museum in Charles City Iowa, very cool and well worth the $30 they charged.
It rolled of the assembly line 10/11/67 and was shipped 10/12/67 to Minster OH which is about a 35 min away. This was a VERY basic tractor, they supplied me with an order form that you used to spec out your tractor. This 1550 only had 4 options, bigger rear rubber, bigger front rubber, two wheel narrow front end,and the large pre-cleaner for the intake. Base MSRP was $5,279.00, as built price was $5,489.00. I also learned that the block has been swapped out on this tractor and the original engine serial# and what I have do not match, I would bet this is when the bigger sleeves and new decals where applied.
Some interesting $ amount for options where:
diesel-$700
Wide front adjustable- $175
rear wheel weights-$47
rubber bushing seat with upholstery-$35
Dont you wish you could buy a new 54hp tractor today for $5,300?