I have a 1914 Erfurt that is unit marked to the 127 R and so far it's the only unit marked LPO8 I have seen and held in my hands.

Also unit marked 1914 Erfurt Artillery's:
FL.6.2
R.J.R.234.IM.G.80.
24RA.3.44.13.
B.2.J.R.R.8.2.
R.A.R.51.5.B.61.
5.B.F.A.R.N.76.
R.J.R.234.M.G.24.
Bob Young