My gun would most closely ressemble the lower gun. Remington Arms Co. is in a long straight banner, without the pronounced banner "tails" of your gun. Instead of the "tails" my gun has a bit more engraving around the banner. The engraving around the hindge pin of my gun is not like either one of your guns.

Additionally, was the single trigger on my gun a factory option or was it a later addition?

Thanks,
Daniel