Rare Singer Sewing Machine 8" Wooden Birch Embroidery Darning Hoop Simanco 96426

Very rare Singer sewing machine birch wood embroidery hoop, Simanco #96426. Inner diameter is just over 7.5", outer is just under 8.5". The rim is 7mm high and is easily maneuvered under the darning foot. The birch remains free from cracks / splits, the metal clamp has darkened a little with age but is rust free. This is a hard to find item!