Classic run of annuals that show up a lot in lower grades but these are harder to find above Fine.
There always seems to be a confusion with this annual. The first one is often advertised for sale as 1965 but in fact it came out in late (around mid September to the best of my research) 1965 for the Christmas market (I got one!) and is the 1966 annual. This is consistent with lots of other annuals that have a copyright year of, say, MCMLXV (1965) but it was intended for the year of 1966 for a longer shelf life.
So there are TV Century 21 annuals copyright years 1965 to 1969 which are in fact annuals 1966 to 1970. The TV 21 1971 annual is the first one dated on the cover.
Note: some PR issues may have no value. Selected issues in FN, VF or VF/NM may not exist in some titles.