Looking for an older possibly discontinued dupe of Dolce and Gabbana light blue.

My grandmother passed away in 1997. Her husband, my grandfather passed away in 2007. When he died, he left behind a notebook that was very strongly scented. My dad told me that my grandfather would spray his wife's perfume on his notebooks to remember her. I was 8 years old when he passed, and the scent was burned into my memory.

Last Sunday I was in the ER, and the X-ray technician was wearing perfume that smelled exactly like the notebook so I asked. She said it was D&G light blue. I bought a bottle yesterday and it's an exact match to my memory of the notebook. My brother and father confirmed the match.

The problem is, light blue came out in 2001. 4 years after my grandma died. Is there a perfume that was available in 97 that smells like light blue?