Is there a list of serial numbers and lot numbers for a New Idea no. 300 two row picker?  I am trying to determine what year ours is.  It is Lot no. P 193, and the serial no. is 110845. 

I know they published such a list for the No. 6 and 7 pickers, but I have not been able to locate one for this model.  Any info would be appreciated.  Thanks!