These bekas sirih or betel leaf holders are from Perak, and are made of silver.
Footnote: Cecil Wray was from Perak, and was the brother of Leonard Wray. Both brothers were keen collectors. His collection of silver ornaments from Perak had been documented in a book called Oriental Silverwork: Malay and Chinese. A Handbook for Connoisseurs, Collectors, Students and Silversmiths by H Roth Ling, a curator at the Bankfield Museum in Halifax, West Yorkshire, England.