A 20th Century Swiss lever by IWC in a gold open face case. Keyless gilt bar movement with going barrel. Plain cock with polished steel micrometer regulator. Compensation balance with blue steel overcoil hairspring. Club foot lever escapement. Signed silvered dial with subsidiary seconds, applied gilt Arabic numerals, gilt hands. Line engine turned 14 carat open face case, maker's mark “Probus – IWC – Shafusia”. Signed gilt metal cuvette.