It looks like Martineau Street to me and as Stitcher says, the blind does say Football Special rather than a route number. Martineau Street was the loading point for tram routes 3, 3X, 6.7.8.9.and 10 and would be the logical city centre departure point for Football Specials to Villa Park.
As Stitcher says a very orderly queue, and would also have included any away fans who could have afforded to travel in those days.