Hi,

It is close but some differences that speaks against it is a Galaxy.
Se image below.

1. Underside of the nose on the Galaxy more rounded, "unknown" plane has a more pronounced arch (similar to a Curare).

2.Small balsa fill where aileron ends at wing root direction on Galaxy, not on unknown plane.

3. Fillet on the fuselage at wing root is more pronounced and strech longer towards leading edge direction on unknown plane then on Galaxy.

4. Above rudder a small piece stretch from fin on Galaxy, not of seen on unknown plane.

5. Canopy slope little more steep on Galaxy then on unknown plane in my opinion.

/Bo