++++ 1 . FREE MOVEMENT OF PERSONS - MIGRANT WORKERS - OLD-AGE AND DEATH ( PENSIONS ) INSURANCE - CALCULATION OF BENEFITS - APPLICATION OF THE SYSTEM PROVIDED FOR BY ARTICLES 27 AND 28 OF REGULATION NO 3 - THE BENEFICIARY'S OBJECTIVE SITUATION TO BE CONSIDERED 2 . FREE MOVEMENT OF PERSONS - MIGRANT WORKERS - OLD-AGE AND DEATH ( PENSIONS ) INSURANCE - SYSTEM BASED ON INSURANCE PERIODS - AMOUNT OF RETIREMENT PENSION VARYING SOLELY ACCORDING TO INSURANCE PERIODS COMPLETED - RIGHT TO A PENSION ACQUIRED BY A CLAIMANT WITHOUT AGGREGATION OF COMPLETED PERIODS - ARTICLES 27 AND 28 OF REGULATION NO 3 NOT APPLICABLE 3 . FREE MOVEMENT OF PERSONS - MIGRANT WORKERS - OLD-AGE AND DEATH ( PENSIONS ) INSURANCE - RIGHT TO A PENSION ACQUIRED BY A CLAIMANT WITHOUT AGGREGATION OF COMPLETED PERIODS - ACCUMULATION OF BENEFITS AS A RESULT OF OVERLAPPING OF INSURANCE PERIODS ACTUALLY COMPLETED IN ONE STATE WITH NOTIONAL PERIODS IN ANOTHER STATE - POSSIBILITY FOR THAT SECOND STATE TO DEDUCT NOTIONAL PERIODS FROM PERIODS ACTUALLY COMPLETED - EXCLUSIVE COMPETENCE OF THE NATIONAL AUTHORITY