Marvel Schebler MA-4SPA Model 10-5217. Excellent condition; 781 hours since new, in original box, with original receipt, and current yellow tag. Fits O-320-A2C, D1A, D2G, D2H, D2J, D3G, E1J, E2A, E2D, E2G, E2H, E3D, E3H, H2AD. Currently $2,316.97 plus tax new from msacarbs.com, overhauled from Spruce $1,865 ($1,265 + $600 core).