<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM EXX INC
AND BE QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               MAR-31-1999
<CASH>                                       3,031,000
<SECURITIES>                                 3,244,000
<RECEIVABLES>                                3,076,000
<ALLOWANCES>                                         0
<INVENTORY>                                  3,424,000
<CURRENT-ASSETS>                            14,215,000
<PP&E>                                       9,433,000
<DEPRECIATION>                               7,037,000
<TOTAL-ASSETS>                              16,813,000
<CURRENT-LIABILITIES>                        4,754,000
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        37,000
<OTHER-SE>                                   9,542,000
<TOTAL-LIABILITY-AND-EQUITY>                16,813,000
<SALES>                                      5,470,000
<TOTAL-REVENUES>                                     0
<CGS>                                        3,594,000
<TOTAL-COSTS>                                1,126,000
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              42,000
<INCOME-PRETAX>                                865,000
<INCOME-TAX>                                   294,000
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   571,000
<EPS-PRIMARY>                                      .22
<EPS-DILUTED>                                      .22