The bottom easily slides off for a drinking cup. Gold washed inside of cup. The lid rotates within the hinge which will lock or unlock the bottle.Shows the quality of workmanship Hallmarked under the hinge. See photos for condition details. A few small dings on bottom and one on the neck (small). A few small dings to the glass at the bottle closure See photos for condition details. The item "Ca 1900 Black Starr & Frost Sterling Over Glass Bottle Bottom Cup Lockable" is in sale since Wednesday, November 14, 2018. This item is in the category "Antiques\Silver\Sterling Silver (.925)\Bottles, Decanters & Flasks". The seller is "jtheis2012" and is located in Guilderland, New York. This item can be shipped worldwide.