Welcome to Historic San Juan Capistrano, or HSJC for short. This is part of a mini series of multi caches that are placed at historic areas in San Juan Capistrano.
At the above coordinates you'll find a plaque that talks about the history of the building. Here, is where you can find the coordinates to get the cache.
You are looking for a nano cache at the final. Please use stealth and replace as found. BYOP.
You can find the cache at: N 33° 29.ABC W 117° 39.DEF
A = The number of letters in the last word on the plaque's title.
B = The last digit in the day this plaque was dedicated.
C = The third digit in the year this plaque was dedicated.
D = The third digit in the year this building was originally built.
E = The last digit in the year this building was originally built plus the first digit in the day this plaque was dedicated.
F = The number of Bs in the plaque's title.
Checksum for A thorough F = 32