At 'first blush" the Trojan looks very clean- if those are original colors, blue and wood finish- very remarkable- barrel length and chokes are secondary, most all 12 gauge Trojans will have either 28 or 30 inch Trojan Steel barrels, double triggers (with a very few exceptions) and manual extractors and a splinter forearm with the spring "pry-off" release design.
Hard to saw without a closer look at that nice DH- are you sure it is a DH 9extractor gun) or possibly a DHE ejector gun- if the blades are split as you open the gun and "ride" in milled grooves in the bottom of the doll's head barrel rib extension (A Parker hallmark) you have a DHE-- either way, a fine and very popular middle grade Parker. Be very very careful in what you use to clean both the metal and steel, my advise would be wipe with a silicone cloth and keep uncased in a heated home-and when you can, have a reputable double gunsmith check them over for you- If you care to list for us where you reside, perhaps we can recommend someone nearby.
