Lillington corroded pallet spring

The organ at Lillington near Sherborne in Dorset was made by T.C.Bates in about 1840.  It is a four stop organ, with swell front and short pedalboard, but most ingeniously a drop-down dumb organist to replace the human one, the barrel playing the keys.  The reason for the ciphers was the corrosion of the pallet springs, which had in places completely disappeared, presumably because of corrosive agents in the yellow pine pallets.