Tall Marbro Marble Table Lamp

This lamp has been in our family since the '60's.  It is unusually tall {57"} without a shade.  It is very solid and heavy.  It is made of white marble with a slight grey veining.  It is in excellent condition with no imperfections.  We realize Marbro lamps are of value, but we would like to find out how valuable it is.  Thank you.