An Aeolian Orchestrelle, Solo Model 'F', was offered recently at Spicers Auctioneers of Goole, East Yorkshire, UK, described as "A substantial Victorian Aeolian Orchestrelle reed organ, solo model 'F' circa 19th century, having breakfront pediment ..." Ref. https://spicersauctioneers.com/catalogue/lot/5103c46be2d559aa327b07a97fd39cdd/2a6fa85538c56e3991b429b74f737ad8/collectors-auction-lot-81/ The photos are very high resolution and the double row of holes in the tracker bar is clearly visible. Robbie Rhodes - MMDigest