At least take off the barrel cap and see how the mainspring lubrication looks. If it is dried green gunk, the movement won’t have enough power to work. You will have to take the mainspring out and clean it. It can be done by hand. Not ideal, and you have to respect even small springs, but it’s not difficult to do. If it just looks dry, you could add drops of oil to the edge of the coils. I’m told it works it’s way down. Only occasionally have I found one swimming in oil. A paper towel would pick up the excess.
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