HTF Antique Klein Manufacturing K-Line Industrial Glass Burlington Iowa Souvenir. Authentic Klein K-Line Burlington Iowa embossed ~ open underside base measures approx. 5 3/8" diameter narrowing to 4 1/4" towards top dome w/ a 2 1/2" diameter inset dip within center. Vintage advertising momento, actual usage unknown ~ nice desk paperweight, caster, coaster or inverted as dish (1 1/4" rim) to hold coinage change, trinkets, or other small office supplies/treasures. Acceptable used condition: see multiple up-close outdoor photos ~ individualized waves-lines-bubbles within glass itself + few rubs-scuffs from Aged typical usage; mild prior tape dried grime residual + few sporadic 1/8" or less flea bite/nicks (including 1 on top + 1 on underside base near rims beside "CO."embossment, not too noticeable, as somewhat blend in, but there shown). Smoke-free home. Note: display easels not included, display props usage only.