Here is a very attractive large sized cobalt master ink with an applied spout top.

Embossed: S. S. STAFFORD'S INKS / MADE IN U.S.A. / THIS BOTTLE CONTAINS ONE FULL QUART

Color:  cobalt, much deeper and purplish than in the pictures

Condition:  Perfect – no damage, just some light ink residue inside - looks like an attic item.