Which branch must be 35 years old?

I'm curious to know, in the context of the statement "Which branch must be 35 years old?", what specific entity or institution is being referred to? Is this a reference to a banking branch, a governmental department, or perhaps a technology company's division? Could it be related to the age requirement for a certain type of financial product or service? It's intriguing to ponder the significance of this 35-year milestone and why it's a requirement for this particular branch. Can you elaborate on the context and what this age limit signifies?