EXHIBIT ITEM 23(l)

                               Purchase Agreement




                                INVESTMENT LETTER

                        SELIGMAN GLOBAL FUND SERIES, INC.

     Seligman  Global Fund Series,  Inc. (the "Fund"),  an open-end  diversified
management investment company, and the undersigned (the "Purchaser"),  intending
to be legally bound, hereby agree to the following:

     1.   The Fund hereby sells to Purchaser and Purchaser purchases such number
          of Class I shares of Capital  Stock (par value  $.001) of the Seligman
          International  Growth  Fund  Series  of the Fund  (the  "International
          Series") corresponding to a $1,000.00 investment, at a price per share
          equivalent  to the  net  asset  value  of one  Class  A  share  of the
          International Series as of the close of business on November 30, 2001,
          such  number of Class I shares of Capital  Stock (par value  $.001) of
          the Seligman  Emerging  Markets Fund Series of the Fund (the "Emerging
          Markets Series")  corresponding to a $1,000.00 investment,  at a price
          per share  equivalent  to the net asset  value of one Class A share of
          the  Emerging  Markets  Series as of the close of business on November
          30,  2001,  such number of Class I shares of Capital  Stock (par value
          $.001) of the  Seligman  Global  Growth  Fund  Series of the Fund (the
          "Global Growth Series") corresponding to a $1,000.00 investment,  at a
          price  equivalent  to the net asset  value of one Class I share of the
          Global  Growth Series as of the close of business on November 30, 2001
          and such number of Class I shares of Capital  Stock (par value  $.001)
          of the Seligman Global Smaller  Companies Fund Series of the Fund (the
          "Global  Smaller  Companies  Series")  corresponding  to  a  $1,000.00
          investment,  at a price equivalent to the net asset value of one Class
          A share of the  Global  Smaller  Companies  Series  as of the close of
          business on November 30, 2001 (the "Purchase Date") (collectively, the
          "Shares").  The Fund hereby  acknowledges  receipt  from  Purchaser of
          funds in the amount of $4,000.00 in full payment for the Shares.

     2.   Purchaser  represents  and  warrants  to the Fund that the  Shares are
          being  acquired  for  investment  and not with a view to  distribution
          thereof,  and that  Purchaser  has no present  intention  to redeem or
          dispose of the Shares.

IN WITNESS WHEREOF,  the parties have executed this agreement as of the Purchase
Date.

                                           SELIGMAN GLOBAL FUND SERIES, INC.


                                          By: /s/ Lawrence P. Vogel
                                              -----------------------------
                                          Name:  Lawrence P. Vogel
                                          Title: Vice President


                                          SELIGMAN ADVISORS, INC.


                                          By: /s/ Stephen J. Hodgdon
                                              -----------------------------
                                          Name:  Stephen J. Hodgdon
                                          Title: President