One-time VMS use

[Joseph Huber_1]

ESD-Q2_F1_SG_FPROD.COP800C_$DLZ

the ending _$DLZ may come from some name conversion in file transfers, and the original
VMS name ends in "_LZ":
if the file can't be uncompressed with gunzip or unix compress, then most probably was created with the old VMS LZCOMP program, and can be decompressed by LZDCMP.EXE.
The LZ* program source is available on various VMS SIG "tapes" e.g. on http://www.decuslib.com/DECUS/07avmslt/tools/lzw5/
.