I'm studying English and I want to ask about a sentence from my book:
For myself I kept a solitary piece of china, one of the few remaining plates from the set my grandfather bought my mother for her wedding.
I think it should be like this:
For myself I kept a solitary piece of china, one of the few remaining plates from the set my grandfather had bought my mother for her wedding.
It's because — clearly — grandfather had bought the china before I took them.
I think grammatically had bought is more accurate. However, is bought grammatically acceptable? Or is the book wrong?