It has case color and marked with a small letter "s" on back side. it looks like a 1865-1866 hammer but seems to be to short and nose of hammer too long. I have pictures of measurements below. Thanks for any help on this.
IMG_4915.jpgIMG_4917.jpgIMG_4920.jpg
IMG_4915.jpgIMG_4917.jpgIMG_4920.jpg

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