Unknown...we couldn’t see the new
3871 3861 movement since the one [and only]
3871 3861 they had on property had the steel caseback.
@ChuckMK23 may have slightly wound the new
3871 3861 to check the smoothness of the winding compared to our 1861s...so he may have some input on that. He may have also checked the chronograph functions. I didn’t check anything other than the edge sharpness and the new box...I was sort of afraid to do much else since I was wearing a Metallica t-shirt, my high school letterman jacket [from 1979], and a Hooters hat & mask combo.