Vintage 1970's belt with buckle

• Mucha 'Byzantine Head' buckle
  By Bergamot Brass Works 
  Marked E-60 
  Measures approx. 3 1/4" x 4 1/2" 
  Condition: there are some scratches (at the bottom of her hair, see photo 6); the prong appears to have been shaved down (see photo 5)
• Black leather belt 
  Unbranded 
  1 1/2" wide 
  32 1/2" long 
  There are five holes, sized between 26" to 29.5" circumference 
  Condition: shows wear consistent with age and use; one of the holes is elongated

Thanks for looking!