The mount of this human headed scarab is a bronze containing approximately 3% tin.
The spectrum (30.8.1080.site.1) was acquired with a Bruker Artax instrument using unfiltered Rh radiation at 50 kV, 700 µA, with a 1 mm collimator for 60 seconds live-time acquisition. Elemental composition of the alloy was calculated using fundamental parameter-based quantification method  provided by Bruker. The accuracy of the method was verified against a reference standard of known composition .
Deborah Schorsch and Federico Carò 2016
 Thomansen, V. 2007. Basic Fundamental Parameters in X-Ray Fluorescence. Spectroscopy, 22(5):46-50.
 Heginbotham, A., Basset, J., Bourgarit, D., Glinsman, L., Hook, D., Smith, D., Speakman, R.J., Shugar, A., Van Langh, R., 2015. The Copper CHARM Set: A New Set of Certified Reference Materials for the Standardization of Quantitative X-Ray Fluorescence Analysis of Heritage Copper Alloys. Archaeometry, 57-5: 856-868.