My 52 with just over 1,100 original hours also has a Sherman combination transmission as did my 51 that I sold 3 or 4 years ago.I have owned my 1951 8N for 51 years.
It was the only tractor I had for nearly 40 years.
They are amazingly reliable, and simple machines.
Mine is in excellent condition (rebuilt engine), and has new tires and new rear rims (It had NACL).
I had mine out on the lawn (with rear blade) for a month this past Summer, for sale.
It didn't sell, so back in the barn it went.
Will try again next Summer.
If next Summer, I can't get $3,000, it will go back in the barn again.
EDIT: I should mention that my 1951 8N has the optional Sherman step up/step down transmission.
Definitely more value than the straight OEM transmission.
It is a sweet old machine, but I really have no need for it, with two more modern machines.
I am emotionally attached, so will not just "give it away".
Where you live (Ohio), and not knowing the mechanical condition, I would suggest that you might offer $1,800.
In the Northeast, where I am, it would certainly bring more.
The combination transmission is quite helpful for most tasks, and mine is in UD nearly all of the time aside from road travel.