Sorry, I made a mistake. The O/U is a 201 E. I was thinking 201 E but wrote 203E. The 203 E is a sidelock O/U.

The SxS is exactly the same as a 447SL shown in a 2003 Merkel catalog described as a 47 SL series with small English-Style arabesque scroll. Yours is the same right down to the bbl wedge engraving.