Online parts retailer Luna Commerce has posted what it claims are parts from the iPhone 5s. Among them are a group of three buttons titled Apple iPhone 5s champagne button set.

The parts in question are the lock slider, power button and volume buttons. The other three parts are related to the SIM card tray.

It is unclear if they are an official option or whether they are high quality third party parts.

Rumours have suggested that Apple may introduce at least one new colour option to its flagship iPhone model.

The company is also widely believed to be adding a new budget iPhone – currently thought to be called the iPhone 5c – that will be available in a number of colour options.

Apple is expected to officially unveil the new smartphones at some point in the next three months.