Transparent greenish yellow, with yellowish green to reddish brown surface. Blown and etched. Bottle with small, ovoid body. Rim plain, with rounded lip; neck long and narrow, tapering at top and expanding at bottom; wall curves down, out, and in; base plain and slightly concave; no pontil mark. Impressed mark under base: monogram "BT" partly enclosed by line that curves down from left to right and, to left of this, second monogram. Surface treated chemically to produce pitted and slightly iridescent finish. Bottle contains irregular mass of glass (?), which is larger than diameter of neck and cannot be extracted.