WWII Y.M.C.A. Scottish Branch Voluntary War Service badge

World War Two era metal and enamel badge issued to members of the Scottish branch of the Y.M.C.A. to acknowledge Voluntary War Service.
The design features four joined quadrants, each having a semicircular shape. The metal edged border is in blue enamel and features the words 'Voluntary War Service' on the upper three sides and three dots on the bottom side, all embedded in the enamel. There are four metal fleur-de-lis motifs between the quadrants on the outside of the badge.
The central area of the badge features the Y.M.C.A. logo (a red inverted triangle) on a white background. There is a black rectangular box over the top of the triangle which contains the letters 'Y.M.C.A'. There is a depiction of a thistle and two leaves embedded in the white enamel in the top quadrant.
The reverse has a brooch fitting. There is no maker's mark.