Boy Size watches are not common, I could even call them rare as they were initially intended for men yet they are perfect now for women. This specific model is very well preserved overall with a fully linked bracelet. The dial has some minor dots throughout and watch looks much better in person than pictured.
 
Details:
 
Brand:   Rolex
Model: Oyster Perpetual
Reference: 6548
Year: 1969
Material: Stainless Steel
Dimensions:  31mm
Crystal:  Plexiglass Crystal
Movement: Automatic
Bracelet/Strap:  Original Oyster Bracelet, dated 1970
Box/Papers: No/No