Newman & Guardia Sibyl Excelsior

{"overview":"The Newman & Guardia Sibyl Excelsior is a British-made folding plate camera from the early twentieth century, part of the Sibyl family produced by the London firm Newman & Guardia. As of 2026, what a Sibyl Excelsior is worth today depends heavily on cosmetic condition, completeness of the leather case and plate holders, and whether the shutter is still functional, with clean working examples sitting at the upper end of that range and incomplete bodies selling for less.","buying_guide":"Inspect the pneumatic shutter for sluggish or sticking speeds, check the bellows for pinhole light leaks along the folds, and confirm the ground glass back and any plate holders are present and undamaged.

Generated summary, 23 Apr 2026 — not checked by hand; prices on this page come from the sales, not from this text.