1. MUS RP 6995 Reference (shelfmark): MUS RP 6995 Title: Scope & Content: Agostino Steffani. Manuscript of twenty-two chamber duets. Sotheby’s sale 22 May 2003 lot no.179. Creation dates: Early 18th century Collection Area: Music Collections Languages: Undetermined Date Range: 6 Jun 2003 Extent: 282 photocopies