Hi [MENTION=407769]carissio[/MENTION],

your Apollo has a Deelites or Fred Deeley headbadge so it is from before 1976.

Have you found the serial number? This can provide more information about the age of the bicycle.

The serial number may be on the seat tube lug, on the seat tube below the seat tube lug, on the seat tube above the bottom bracket shell non-drive side, or on the bottom bracket shell.