The gilded bronze statue of Matthew Boulton, James Watt and William Murdoch by William Bloye stands on a plinth of Portland stone, outside the old Register Office on Broad Street in Birmingham, England.
It is known locally as The Golden Boys after its colour, or The Carpet Salesmen after the partially-rolled-up plan of a steam engine which they are examining.
All three men were members of the Lunar Society.
Sponsored by an £8,000 bequest from Richard Wheatley in 1939, and £7,500 from the City Council, it was unveiled in 1956, from preliminary designs drawn up in 1938.
The statue was restored and re-gilded, and replaced in its old position in September 2006.