cyq, serial number 774x.  In the early "x" block, Spreewerk used some frames that

were made at Fabrique Nationale in Belgium.  Most of these appear from about 400x to

1400x but there are a few "flyers" serial numbered later.  Most of the FN frame cyqs have

an E/140 stamp on the left side of the frame.  This one has an E/88, which Buxton says is

correct.  Also, most all have a "M1" stamped on the left trigger guard web.  Buxton says they

may be stamped with "M1" or "m".  This one has both.  The "m" was stamped over the "M1". 

The "m" looks like it was a damaged die and almost looks like part of the stamp was scratched

in but it is under the original finish so I assume that is just the results of a rough die.