Sentence:  Is the stock 1939 Harley-Davidson you are looking at 100% 1939 or is it 50% 1939 and 50% <WSD>Heinz 57</WSD>, or does it only have a motor with 1939 crankcases sitting in a 1972 chassis? 
Meaning of the word marked with <WSD> tags:  A complete mix; containing parts of many different origins.