I don't know of a double trigger Model 23 ever being offered in North America. A version, that as I recall was called the Model 22, was offered in Europe with double triggers. I have the two little Model 23 Classics and if they are the first thing I shoot on a given day I'm fine with them, but if I shoot a gun with a really nice crisp trigger first and then pick up a Model 23 that single selective trigger is pretty spongey.
I also have both Model 21s and Browning Superposeds and to me nothing is better than crushing a pair and opening the Superposed and hearing those ejectors work!! Throw in the smell of Federal papers just for good measure!!
Michael McIntosh made essentially the same comment about the Model 23 Trigger. The Model 22 is a different gun. Made for Winchester by Laurona in Spain. Quite a few sxs fans have never seen one.