The summer window turnover of players was 28 - 14 in, 14 outBCFC
Blues brought in 14 players to St. Andrew's - the most ever to the Club during the summer transfer window.
And by snapping up one of the league's most exciting and creative players in Jota, Blues surpassed the £6 million record transer fee paid out to Valencia for Nikola Zigic.
And not only was it a hectic period of re-shaping the squad to Harry Redknapp's liking with the backing of the board and owners with incomings, there were 14 deals involving players moving out.
Let's not forget, too, that in the last January transfer window Blues added more senior players to the ranks since 2013 and the financial outlay for a January was the biggest for nine years.
The most players Blues had previously acquired during a summer transfer window was 11, on three occasions.
First was in 2007 when Blues had returned to the Premier League at the first attempt following relegation. The likes of Garry O'Connor, Olivier Kapo, Franck Queudrue and Liam Ridgewell were signed. There were loans for Rafael Schmitz, Oubina, Johan Djourou and Wilson Palacios.
In the summer of 2011, Carling Cup holders Blues were re-tooling after Premier League relegation and the impact of off-field matters. In came Chris Burke, Marlon King, Steven Caldwell, Adam Rooney, Jonathan Spector and, at the end of deadline day, Wade Elliott and Pablo. Chris Wood was a loan signing.
In 2014, Lee Clark brought in 11 players for the senior squad. These included Jonathan Grounds, Stephen Gleeson, David Cotterill and David Davis. Clayton Donaldson, who was sold to Sheffield United on deadline day, also began his Blues career this July.
From then to now, Blues have undergone a major transformation, with the owners showing the ambition and providing resources to help create an exciting, new-look side under Redknapp, as the manager himself acknowledges.
David Stockdale, who was already Premier League bound, was one of the first through the door this summer, an eye-catching signing that made football sit up and take notice.
One of the Championship's brightest talents Marc Roberts was snapped up and Cheikh Ndoye came in fresh from leading Angers to the French Cup Final.
Isaac Vassell's addition, with an eye to the future, helped to put the accent and pace and mobility, whilst Jeremie Boga's loan signing could well add some X Factor, such is his ability and creativity.
Sam Gallagher was wanted by a host of clubs and Brentford's captain and former Player of the Season Harlee Dean strengthens the backline.
Brentford was also the target point for Jota, the exciting playmaker who has been involved in 20 Championship goals in 2017 (12 goals, eight assists).
Deadline day was certainly busy for Blues as Jota arrived after Blackburn Rovers long-time captain Jason Lowe and before his ex-team mate Maxime Colin.
Blues summer window was rounded off late on Thursday evening by rejecting bids for Player of the Season David Davis from Derby County and signing young prospect Liam Walsh from Everton on loan.
Inevitably in football there has to be a turnover of players and old faces making way for new, and the Club thanks Ryan Shotton, Adam Legzdins, Kerim Frei, Maikel Kieftenbeld and Donaldson for their service.
But now, as the dust begins to settle from such a busy summer and deadline day, we all look forward with optimism to seeing Redknapp's new Blues in action - Keep Right On!
Birmingham City summer window 2017
Craig Gardner, West Bromwich Albion, undisclosed
David Stockdale, Brighton & Hove Albion, free
Marc Roberts, Barnsley, undisclosed
Cheikh Ndoye, Angers, free
Isaac Vassell, Luton Town, undisclosed
Cohen Bramall, Arsenal, loan
Carl Jenkinson, Arsenal, loan
Jeremie Boga, Chelsea, loan
Sam Gallagher, Southampton, loan
Harlee Dean, Brentford, undisclosed
Jason Lowe, Blackburn Rovers, free
Jota, Brentford, undisclosed
Maxime Colin, Brentford, undisclosed
Liam Walsh, Everton, loan
Greg Stewart, Aberdeen, loan
Andrew Shinnie, Luton Town, loan
Dan Cleary, Solihull Moors, loan
Connal Trueman, Solihull Moors, loan
Viv Solomon-Otabor, Blackpool, loan
Diego Fabbrini, Real Oviedo, loan
Kerim Frei, Istanbul Basaksehir, undisclosed
Adam Legzdins, Burnley, undisclosed
Ryan Shotton, Middlesbrough, undisclosed
Robert Tesche, Bochum, loan
Dan Scarr, Wycombe Wanderers, loan
Cheick Keita, Bologna, loan
Clayton Donaldson, Sheffield United, undisclosed
Maikel Kieftenbeld, Derby County, undisclosed