This collection of caches has nothing to do with the Church Micro series in the UK. Given that the Australian 2016 census indicates that No Religion and Jedi Knight are the fastest increasing classifications of the optional religion question "What is the person's religion?" it is not surprising that there is surfeit of empty churches that have been repurposed.

This will bring you to the former Sedan Evangelical Lutheran Church. The building was erected in the early 1900s and opened on Sunday 1 June ABCD by Pastor J.F. Lehmann from Angaston. It reflects the divisions between Lutherans at the time and is of interest that both should have been represented in the tiny community that was Sedan. Perhaps more generally, it is historically significant because it highlights the German origin of the town.
From the street you can see a "foundation stone" near the peak of the roof.
On this stone there is a date: ABCD
Use this information to determine the final location of the nearby geocache.
S34° 33.(2A + 2C)(B / 3)(D - C) E139° 19.(B - D)(D - C)(D - 4A)
Checksums: 15 and 13