Vintage Brown Glass Bass Cello Bottle Instrument 7

Vintage Brown Glass Bass Or Cello Bottle Instrument 7. Unknown region of manufacture. Unknown time period of manufacture, but it is definitely vintage. Brown glass stamped with a numeral “7” on the bottom. Not sure if this is a cello or an upright bass, but it has 4 strings and 2 tuning knobs. No cork or cap. No chips, cracks or scratches. Excellent condition. All reasonable offers will be considered, make one today! Item number - BOTT-1