First Time I have seen the Alpha "Junior" Sax today. Or as I like to call it the 2/3rds Saxophone. I understand the principle of having a "lighter" instrument and less keys in positions that may be un-ergonomic to small hands, but it seems to me this is only useful for up to 2 years before you would need a Standard Fully keyed saxophone.
Keys Not included: High D#, F, E & F#. C Trill, F Till, Low B & Bb + Associated key work & Guards.
I would recommend parents NOT to buy this instrument unless for specific reasons ie: Physical hand shape