A Claude Monet painting of the Normandy coast, kept in the same family for generations, is heading to auction at Christie's Paris this autumn — and it carries the weight of one of the most important dealer collections in art history.

The sale, titled "Durand-Ruel, Generations of Vision," brings together works that have remained in the Durand-Ruel family's possession since they were acquired directly from the artists (Christie's). The full collection is valued at approximately €30 million (Puck).

Christie's described the Monet — a depiction of Pourville, the seaside village in Normandy where the artist stayed and painted — as the highlight of the forthcoming sale (Christie's press release). Works by Pierre-Auguste Renoir are also included in the trove (Puck).

The name Durand-Ruel is inseparable from Impressionism itself. Paul Durand-Ruel, the 19th-century Parisian art dealer, was among the first to buy Monet, Renoir and their contemporaries when the establishment mocked them — stocking his galleries, lending them money, and effectively keeping the movement afloat in its fragile early years. Many of the works in this sale entered the family's hands through those direct relationships, before the art world caught up.

The collection will be exhibited at Christie's in Paris from 16 to 21 October, ahead of the auction (Oman Observer). The public viewing offers a rare chance to see works that have hung in private hands, not on museum walls, since the century they were made.

What makes this stand out is the provenance — the documented chain of ownership, in the art world's parlance. These are not paintings that passed through a half-dozen collections and auction rooms. They went from the artist's studio to the Durand-Ruel family, and there they have stayed. For collectors, that kind of unbroken history is hard to overstate: it means fewer questions about authenticity, fewer gaps in the record, and a direct line back to the moment the paint was still wet.

The Monet of Pourville sits at the centre of it. Monet worked in the Normandy coastal village in the 1880s, producing views of its cliffs and shoreline that are now scattered across major museum collections. The example coming to Christie's has never been through the public market in the way most headline Impressionist works have.

For anyone watching the autumn auction calendar, this sale is one to track. The €30 million valuation positions it as a significant event for Christie's Paris, which has been building its marquee-sale profile in recent years. And for the wider Impressionist market, fresh material with airtight provenance is increasingly the thing buyers want — and increasingly hard to find.