Smithsonian Motor-Works STEM 49013 4-Cylinder Engine Model Kit opened, but new

Smithsonian Motor-Works STEM Working 4 Cylinder Blue Engine PARTS ONLY

Smithsonian Motor-Works Gas Engine Model Kit New In Box - Ages 8+

Smithsonian Motor-Working Gas Engine Model Kit (#49013) New Open Box - Ages 8+

Smithsonian Motor Works Stem 4-Cylinder Engine Model Battery Operated New

Smithsonian Motor Works See Through Model Engine *MISSING PIECES*

Smithsonian Motor-Works 4-Cylinder Engine STEM Model Kit

Smithsonian Motor-Works Gas Engine Model Kit (#49013) New In Box - Ages 8+