Diamond T model 150

hi
we have an old Diamond T Truck in the shed that needs a value put on it for probate of a will, the identification plate says model 150, I cant find anything on the web about these but there is mention of model 151, it has steel cabin, gross weight of 5940 pounds, chassis number 33272, and two piece windscreen that has an openable top on drivers side of the windscreen.
any help or ideas would be greatly appreciated
thanks

We need pictures which will not only give an idea of model and age but also condition. Location? At the end of the day it is what the market is prepared to pay and you will only discover that by actually selling it at auction eg ebay or Lloyds etc. Unrestored trucks have only scrap value (say roughly $200/ton lately depending on where you are)