VaC,
Take a look at the ejectors/extractors that are at the end of the barrels, nearest the breech. They fit tightly and seem integral with the barrels. If they made of two pieces rather than one solid piece they are ejectors. If you take the forend off, you will also see two metal slots in the part of the forend wood that is closest to the knuckle around which the barrels fall. Sure evidence of ejectors.
The ejector parts are separate because if you only fire one barrel, the ejector on that side will kick the empty hull free as you open the gun. The unfired round will just be extracted by being moved out a half inch or so. So you just reload the fired barrel and close the gun, ready for two more shots.
Yes, a Royal double rifle in .303 given good condition will be more valuable than a Grade 2 even with the latter given extra engraving and a scope and a case. Here's an ad from a dealer who is among the sponsors and advertisers of this Board. Note his gun is cased, and he claims very high condition. Who knows what it might actually sell for. Believe he's had it a while...
Regards, Tim
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Holland and Holland Sidelock Ejector. Toplever Hammerless "Royal" Grade Double Rifle - .303. 28” steel barrels. Concealed third bite. Metford rifling with bolted safe and strap over comb. Cased in brass bound leather with all accessories (relined interior is unmarked). Excellent original condition retaining almost all case colour and blue. Made in 1899. Lettered. Serial 17XXX
$31,900