Eric,

Sorry I sent you on a wild-goose-chase. I think you are correct that it may be in a different location if it is a real early S5 - they may have used a location like was used on the last of the IV's. Have to admit not being too familiar with the IV's possibly someone who is may have an idea. I do think the numbers back then were 8 digits which would agree with the number of characters on the paper.