Colombo Design Siena KSI11R: brass door handle on rose

Siena KSI11R is an interior door handle from the Colombo Design Antologhia collection, made of brass and supplied in a traditional rose-mounted configuration.

Siena revisits one of the most recognisable forms of classical architectural hardware: a cylindrical stem ending in a bell-shaped terminal. The design is restrained yet clearly rooted in historical door hardware, making it particularly suitable for timber doors, period interiors and restoration projects.

Main specifications

Cylindrical stem with bell-shaped end

The lever profile is the defining feature of the Siena model. Its cylindrical stem terminates in a bell-shaped element that directly recalls historic architectural hardware while avoiding excessive decorative complexity.

The rose-mounted configuration gives the composition a lighter appearance than the backplate version and allows the lever itself to remain the main visual feature.

Version with return spring

The KSI11R version incorporates a return spring. The range also includes an RB low-rose configuration without an integrated spring, to be selected according to the lock mechanism and door specification.

Traditional Italian craftsmanship

Siena belongs to Colombo Design's Antologhia collection, a Made in Italy range dedicated to the reinterpretation of historic architectural hardware. Traditional manufacturing methods are combined with a significant element of manual craftsmanship and hand finishing.

Slight porosity, texture or minor surface variations may occur as a natural consequence of these processes. Such characteristics are consistent with the handcrafted character of the collection rather than the perfectly uniform appearance of fully standardised industrial production.

Natural finishes and ageing

The product page offers bronze, natural brass and natural nickel finishes. Natural untreated metal surfaces may gradually change in colour and appearance through handling, exposure and ageing.

Natural unlacquered brass, in particular, gradually oxidises and develops its characteristic surface patina, contributing to the authentic appearance associated with traditional architectural hardware.

When to choose the Siena rose-mounted version

The KSI11R version is particularly suitable when a recognisably classical handle is required with a lighter mounting solution than a long backplate. It works especially well on timber doors, period interiors and restoration projects where the hardware should complement the architecture without becoming visually dominant.