Japenese Dragon Silk wall art

This is a beautiful Japenese Dragon embroidery. It is hand wrapped silk and metallic thread on black silk. There is some fading of the black silk but no tears. I believe this to be Japenese because the dragons have 3 toes. The dragons are female because of the fan tails but that is the limit of my knowledge. I was told by an appraiser that this is possibly 18th century if not older and could bea "sleep" ?? Would love to know more about this. The back has a seal from the company that framed it here in the states and I do not know where the sticker below it originated from. There are no other markings that I can see. Depending on how the light hits this art it will look more gold or more silver (see first 2 pictures).