Beautiful vintage pure silk threads of USSR times.
The condition is very good.
The upper layer of the thread on the bobbin is dirty. Remove the top layer before embroidering.
At the plastic bobbin about 2000-2500 meters.
Each spool has been used to some degree and so difficult to gauge length.
Thread thickness #40
Set includ 5 spools.
Remember - silk begins to shine even more if you iron the finished embroidery