Red sandstone was found during excavation work
It's been revealed that parts of a historic building in Sandwell could be up to 200 years older than first thought.
It was always believed that the Oak House in West Bromwich was around 400 years old.
However, new excavations have revealed there may have been a medieval building on the site which pre-dates the timber framed farmhouse by up to 200 years.
Archaeologists will now be called in to try and find out more.
A large piece of worked red sandstone was discovered when contractors began digging to fit new signs at Oak House.
Frank Caldwell, the borough's museums manager described it as a "really exciting development".
"Things are still very much in an early stage, but this could be a major find, " he added.
He said the sandstone had obviously been placed there deliberately and could have been part of a medieval farmstead.
Frank went on: "This is potentially a really interesting find following the recent unearthing of documentary evidence in Stafford's archives of a house known as The Oaks in West Bromwich in the 1460's - nearly 200 years before the current house was built."
Sandwell Cabinet member for youth, culture and leisure, Cllr Ann Shackleton said: "This is an unexpected discovery and everything is still in its early stages but archaeologists will now be called in to carry out a limited excavation of the stonework."