How old is a cat with no "bred date" shown in cattery?

[Ellen Ireland]

I have noticed that some of the really old kitten boxes I've picked up over the years do not show a "bred" date in the cattery. The date shows as "unknown." The earliest "bred" date I have seen as shown on the cats in my collection is January 2012. So, does that mean that a cat with an unknown bred date dates back to 2011, the first year of KittyCats?