Comparison : Item # 4012-02, Flask, Round Bottom, Three Neck, Heavy Wall
Item # 4012-04, Flask, Round Bottom, Three Neck, Heavy Wall
Item # 4012-06, Flask, Round Bottom, Three Neck, Heavy Wall
Item # 4012-08, Flask, Round Bottom, Three Neck, Heavy Wall
Item # 4012-10, Flask, Round Bottom, Three Neck, Heavy Wall