The above coordinates takes you to a historical site in Mission Viejo. The plaque will help you find the cache. There should be a date on the plaque. Month, Day , and Year. Keep this format.
Month = A Day - 83 = BC Year - 7759 = DEFG
The cache can be found at N 33° 3D.EFG W 117° 3A.3BC
You can take the trail or Park within 10 feet of the cache depending on which way you go. Checksum for A-G = 42 Congrats to Gobert on the FTF!
You can validate your puzzle solution with
certitude.