The sarcoma which has equal propensity for maxilla and mandible is:

Chondrosarcomas are unusual in the facial bones, accounting for about 10% of all cases. They occur in the mandible and maxilla with equal frequency. Maxillary lesions typically occur in the anterior region in areas where cartilaginous tissues may be present in the maxilla. Mandibular lesions occur in the coronoid process, condylar head and neck, and occasionally the symphyseal region. Oral radiology White and Pharaoh; 7th ed. Page no 440