Rounded chines and severe tumblehome at the stern say Sears or Elgin (who made them for Sears) to me. But ... close-up pictures of the transom corner braces, the knee (vertical support in front of the OB), how the seats are affixed to the sides, plus pics of the bow deck can help truly identify the make/model/vintage.
For examples, StarCraft corner caps had an embossed 'star' on them, while Sea Nymph models had large pieces almost as wide as the seat affixed to the seat and then attached to the sides up by the rubrail/gunnel.