<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM
EXX INC. AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               JUN-30-1999
<CASH>                                       4,466,000
<SECURITIES>                                 3,105,000
<RECEIVABLES>                                2,523,000
<ALLOWANCES>                                         0
<INVENTORY>                                  3,312,000
<CURRENT-ASSETS>                            14,836,000
<PP&E>                                       9,487,000
<DEPRECIATION>                               7,095,000
<TOTAL-ASSETS>                              17,473,000
<CURRENT-LIABILITIES>                        4,714,000
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        37,000
<OTHER-SE>                                  10,254,000
<TOTAL-LIABILITY-AND-EQUITY>                17,473,000
<SALES>                                     11,533,000
<TOTAL-REVENUES>                                     0
<CGS>                                        6,925,000
<TOTAL-COSTS>                                2,638,000
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              66,000
<INCOME-PRETAX>                              2,209,000
<INCOME-TAX>                                   751,000
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                 1,458,000
<EPS-BASIC>                                        .57
<EPS-DILUTED>                                      .57