The Wurlitzer Selector Drive Ratchet Assembly # 30327 is used on the Wurlitzer models 500, 700, 800, 750, 750-E, 780, 780-E, 850, 950, 1015 and 1080.

This assembly includes these parts:
30327 Selector Drive Ratchet Assembly
30324 Dog and Pin Assembly
42716 Shoulder Screw
142 Spring

They are shown on page 14 of the Model 1015 Parts Catalog and on page 16 of the model 500 and 600 Parts Catalog. 
They are also seen on page 33 of the model 700 and 800 Parts Catalog.

The assembly is in good condition and has good action on the spring loaded pawl.