Vintage Glass Holy Water Bottle / Flask From Italy

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This beautiful holy water flask measures 4 1/2" x 5". One side of the bottle reads "Certosa A Firenze" with an insignia circled above that. The bottom is signed and has the number 1118 and the Roman Numeral II below that. T is a loop on each side so I assume at one time it had a ribbon or rope for carrying. The stopper is missing. I don't know if it was a cork or something that matched the design. I've tried to research this item, but have not come up with anything other than what it is and it's European origin. I've had this flask since the late 1970's, but have no way of knowing it's actual age. T are no cracks, but t are a few minor spots that could use a bit of touch up paint.