The 1994 throwbacks.
In 1994, the NFL celebrated their 75th anniversary and many teams throughout the league wore throwbacks that season. The 49ers wore the throwbacks you see above, taking back to their 1955 set, early in the season. When they got superstitious, they decided to keep wearing that uniform. They eventually rode that all the way to their Super Bowl XXIX victory.
That was the last time the 49ers won the Super Bowl and the aspirations to return and win it are at an all-time high for this franchise. Since the 49ers changed their uniform to their current set in 1994, the team has not worn a throwback for any kind. This current set is so similar to what they wore during their glory years of the 1980s that they eliminated any potential throwback games to that era. Of course they could throw back to the Jeff Garcia, Shaun Hill days but most of those were very tough seasons that fans might not want to remember.
So why not throw back to the 1994 set?
But at the end of the day... 