Lot of 3 RC airplane engines.  Not tested.  Sold as parts or repair only.  Includes:

  1. HB - Engines (W. Germany) HB. 15 RC Cat. no. 1500 w/ muffler
  2. O.S. MAX (Osaka, Japan) 20 RC w/ muffler
  3. K&B Mfg (Downey CA) K&B 61 R/C Enine P/N 6550 w/ muffler