My chassis number is 019694. According to the wiki, whilch lists the last 6 numbers of the last vehicle built in the corresponding month, mine was built in Dec. Your car would appear to be a 1967 car, as the wiki shows the last car to be built in 66 ended 019737, and the last in Jan 67 ended 019832, ergo your car is a 67, not 66. (Assuming the wiki is correct!) However, my car was shipped to the US and not first registered until Feb '67.
It is true that the data card scans are hard to read. Mine was almost indecipherable. In the end, I called the Classic Centre and asked them to transpose the information into an email, as their hard copy was in far better condition than the scan they send. They did this for me within the day, and it contains all the information in a readable format. I'd recommend that you do this if you want more complete info.
JH