RARE vintage Twisted MARQUISE Bulgarian Seltzer Bottle Electric Blue Sofia OLD !

Description

One .5" x .75" chip on its shoulder. Please see last pictures
Late 19 century bottle from Bulgaria. Marked WCo on its base .   If you can translate this language, please let me know . Thank you
Thin shape bottle but heavy , almost 3 lbs .
12 inches tall , base is 3.5 inches diameter , 3 inches diameter under shoulder
Nice electric blue base color .