Butterfly KINRAN golden thread used fabric
This is "smaller" size Goshuincho book
 
Measurements :16cm ( 6 1/4in)x 11cm (4 1/2 in), thickness 1.3 cm (a half inch)
Book is accordion-fold binding. Japanese thick WASHI paper used.
 
Covering is Kinran (gold color thread used fabric, gold brocade) gogeous fabric used. Dark blue based, large butterflies are flying. (Both sides have big a butterfly)
 
Butterfly is expressed as a symbol of soul or sprits in Japanese traditional performing arts.