Media type: E-Article Title: A Rock Crystal Watch with a Cross-Beat Escapement Contributor: Chandler, Bruce; Vincent, Clare imprint: University of Chicago Press, 1980 Published in: Metropolitan Museum Journal Language: English DOI: 10.2307/1512762 ISSN: 0077-8958; 2169-3072 Keywords: Museology ; Conservation Origination: Footnote: