This cache is part of the "Not the series" series and commemorates The Optical Series placed by plainoldgraham.
There may not be an optical link to the series, but you will have to take a good look to decide how to retrieve the logbook from the cache container.
The cache has been placed in front of very good friends' house and they are aware that it is there. You may have somebody watch you doing it with a big smile on their face so just wave back.
The "Not the series" series is made up of:
Not the Seaview Series
Not the Trig Beacon Series
Not the Disney Series - archived
Not the Postbox Series - 3.0
Not the Heroin Series - Cousin Penny - archived
Not the Urban Park Series
Not the Snail Trail Series
Not the Walmer Challenge Trail Series
Not the Afrikaans 101 Series
Not the Optical Series
Not the Borders Series
This cache was originally placed as part of the PEG 2020 game (Port Elizabeth Game 2020).