About a week ago I walked into a violin shop and they had an Engelhardt Swingmaster. Its G & D strings were thicker than the A & E. The G,D strings had purple wrap the A had red and the E yellow. I thiught the thicker ones(purple) were the Original Flexocors but I went to my bass lesson and my teacher had the Flexocors and they were pretty medium-size.

Can anyone idenify the G & D strings on the Swingmaster?