These proof marks are actually nice and clear.
The top line on the RH barrel is the modern Birmingham set, the line closest to the lumps is the earlier original, black powder London set, used from 1887 to 1925 (nothing much changed for London BP proof until the chamber length mark was added).
What is confusing is that the Birmingham Reproof mark and its date stamp have been added to the original London proof line rather than immediately after the Birmingham proof line. The reason probably being that the was not quite enough room for the date stamp and the Reproof stamp always seems to be at placed at the muzzle end of the flats.
The crossed swords give the date of the MOST RECENT proof: 1997.
