I found lots of these vintage boxes of SPAGNOLETTA GIOCONDA spools of cotton in an old Haberdashery Warehouse that I cleared.
They are Italian - hence the Mona Lisa !
In each box there are 12 spools - each 50 yds long and with "maximum strength and elasticity
On the cellophane wrapper on each spool is printed, in Italian :
MERCERISED SUPER COMBED AND GASSED THREAD
To see which number is which colour - click on the number - the corresponding colour will appear at the top of the list of pictures.
Some of the boxes are grubby, faded or a bit bashed from long years of storage.
If you want these boxes for display - let me know and I'll send the best condition ones I have.