Posted By:
ScottMost sellers of old score-books use the copyright dates when advertising on ebay. I'm guessing this one was probably printed fairly close to when the games were scored, in 1878. Advertising this as an 1866 scorebook would be akin to advertising a 1930's glove with a 1905 patent date as a "1905 glove" (which is frequently done....on ebay )
Perhaps I should have advertised it based on the age of the tree that the paper was made from, or the carbon molecules used to create the ink used to print it.