Funny how gorgeous aqua glass can be! On the left is a 'A' Mold Hickock LRI. Embossed up on the upper rim: HICKOCK'S PATENT//1859 - note, no period after the 1859. On the right is a 'C' mold with the same embossing, however this style has a period after the 1859. I have identified (labelled specimens on my shelf) up to style 'G'. Differing in tab shape, embossing location, or other variation. Neat OLD pieces.