Mark,
That is a beautiful Daly diamond quality model 250!
To answer your question, yes, your gun is a Heinrich Lindner made Daly. The crown over crossed pistols mark just ahead of the barrel flats is one of the marks Lindner used during his 40+ years of gunmaking. In addition, the serial number of your Daly puts it in the range associated with Lindner Dalys.
As MP noted, your gun is also the first Daly I have seen or had reported in the the database with both the crown over crossed pistol mark and the SAXONY stamp. Until today I had only seen the SAXONY stamp on Lindner guns sourced to William Schaefer & Son bearing the "lamp" over crossed pistols shown in MP's photo above. So yet another twist in the Daly story! I wish I understood why the SAXONY stamp shows up on this gun.
At the time of its production (just prior to 1892), your gun, the model 250, was the finest Daly SxS offered by SD&G. It retailed for $275. I should emphasize the phrase "at the time of its production". While gold encrusted "regent diamond quality" guns (model 500) and other more heavily emblished gun were offered later, at the the time this gun was produced, it was the finest SD&G offered.
I really like the looks of Dalys produced during this period. The only really significant technical "advancement" on later Lindner diamond quality guns is the replacement of the dollshead with what SD&G advertised as the "Monte Carlo crossbolt." I guess you might include fluid steel barrels in the technical advancement category, but that is debatable :-).
Congrats on your new gun Mark. It is really a beauty.
Ken