A Son of the Rock

I was over in the west in April (for the Queen of the South game I think) and took in Helensburgh again.

This shop (in Sinclair Street?) has very minor Art Deco touches:-

Detail of windows to right:-

This building (definitely in Sinclair Street) is impressive in its upper reaches:-

Roofline detail:-

This cartouche looks like it may be a representation of St Andrew:-

Edited to add:- I have since discoverd this is one of Charles Rennie Mackintosh’s designs.