I recently purchased a vintage SS Datejust 1601. The serial number between lugs reads 2,403,xxx. I looked up the serial number chart online and am unsure whether its year of production is 1968 or 1969. Does the chart state first, last or random serial of each given year ? To understand my rather foolish question, 1968 was a sort of milestone in the history of my country and as such feels special to me (Russian invasion of then Czechoslovakia which threw the country back into darkness for 21 more years).
Thank you very much for your kind advice and my apologies if this has been posted before. English is not my maternal language so please pardon any imperfections here too.