One wedge is missing, and the finial of the other wedge is broken off and missing, but at least you have one pattern. That partial wedge is also cracked. The fence side of the plane has probably been cut down, and there is now a small piece of wood that is extending the fence, which was commonly done.
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as-is Melville Aberdeen Scotland 4/8″ wood sash molding plane
It notes that they also made locks and hinges, and were described as ironmongers after 1853. Condition would otherwise be fair to good, showing wear, and would be better with a cleaning. There are a variety of scratches and dings in the wood.