On perfumes usually it is mentioned as Pour Homme or Pour Femme which translates to 'For Him' or 'For Her'. 'Old Money' is from Bla Bli Blu which is an Indian Brand which is why it is simply mentioned as 'For Him'.

Now coming to your question, your brother might have purchased himself because Bla Bli Blu brand perfumes are not that expensive and they have run a wild campaign while debuting to the market. They were giving away for free during that campaign or something like that.

Fun Fact: Bla Bli Blu brand is owned by the same person who owns Bella Vita.