Why did they do that anyway's, seems it should be where the front trigger would be.
So that upland bird hunters could get a gloved finger in the trigger bow.
Chuck H...is it a selective single trigger? Is the selector part of the sefety mechanism? If you answered yes to both questions, then chances are that your trigger is a Miller...if you answered no to either question then you may have a Harry Howland disigned trigger. Even though Harry wasn't granted a patent for one of his designs until 1931, there is evidense that Ithaca was using in house single trigger designs even into the late Flues era, and maybe further back. The second patented Howland design was non selective. The first was selective. It's difficult to say without pics or more info...
It would be difficult to tell the difference between a Miller and a Howland 1931 design (selective) without seeing pictures of the mechanism itself