Wow that's really nice to have the trunk and some treasures besides! Some families emigrated here with all their worldly possessions in a trunk like that.
Very nice family heirloom. My Wife, the Great Sewer of the West, has a growing collection of those small sewing machines and they are mostly Childs Toys though there are a few Saleman Samples around but very pricey. That one is a toy but they still work, will sew. We are currently bidding on eBay, over $100 on one. It is mainly Cast Iron and heavier made than the one shown here. This type usually go in the $50 - $100 range, not bad. It dates from the first quarter of the 20th century.
I also have my Mother's toy sewing machine and if I recall right it is lighter built than this one. It is black. Thank You Jim for the sewing machine info. You should post your wife's collection on here.