The “Reverso II” Enamel Coat of Arms

An 18k yellow gold reversible wristwatch with an enamelled coat of arms on the case-back, fitted with an 18k yellow gold deployant clasp signed by Cartier rather than Jaeger-LeCoultre — a detail auction cataloguing leaves unexplained, though rival maisons occasionally supplied straps, clasps or cases for one another’s watches earlier in the 20th century, particularly when sold through shared retail or family connections.