Please help: Rolex Oyster perpetual datejust

[Jack1979]

Good morning
I found a watch marked Rolex in a drawer of my uncle's house (he's dead a month ago).
The watch has etching/engraving "STAINLESS STEEL BACK DEVILLE SWISS MADE" on the back (the back is transparent) of it with the rolex crown in the middle, the watch is a Rolex Oyster Perpetual Datejust superlative chronometer officially certified.
It's a vintage model i don't know the date it was made but i have some numbers from the bracelet: D12 steelinox 62523 h18
May you help me and Say me if It Is a fake? Thank you