Kernrechtsfrage
Whether the individual account could be corrected under Art. 141 Abs. 3 AHVV based on the evidence submitted.
Extrahierter Entscheid
The appellant did not prove the alleged contribution periods with full proof or obvious inaccuracy; account correction was therefore unavailable.
Extrahierte Begründung
Sea-service book entries showed work on two Swiss ships, but did not prove wage payment and AHV contributions. No suitable additional evidence or concrete indications of missing documents existed.