How does the 4 represent 69 ?
Works on years since the Emperor reign commenced Start year is 1926 as year 1 so to 1969 is 44 years They shorten it sometimes to just 1 number being 4 although some parts have the 44 but I could be full of sh*t also. I think the cam towers have the 44 Sometimes they use japanese symbols but my Japanese is very rusty
Ok. That could make sense ! I hadn't thought of dropping a digit from Showan calendar as a possibility, but the decimal between the digits could be interpreted as date coding, in particular to the context of what we are looking at.