Used, previously running B&S 5HP ---- Model 135202_1238_E1 Horizontal engine. Needs work/restore, some new parts (air filter, gas cap, breather tube grommet elbow, head gasket, rings, shaft seals, and crankcase gasket as part of a rebuild) and carb work.
It is not seized, has good compression (a hone and new rings will bring compression from 80 to 130 psi), small oil leak due to bad oil cap o-ring. Does not include pulley. First pic is for clarity, and very similar to this engine. --- $100 AS-IS
*** I have some new parts, air filter and possibly the two shaft seals. Note: Just a new engine block is $470, just the block, not a whole engine.