(Kirchhoff D, 1993, 29", 5", M SEV Re Tet)  His description includes:  Brilliant sunny gold self.  

[SDLG  x  BIT MORE CLASS]

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-- Comments:  Superb color and form.  Somewhat tender in my Zone 4 northern garden, but was great the last 2 years (2017, 2018) which warmed up earlier than usual.