Added 7 stamps for special days:
group-1
Added 2 regional premium stamp:
group-2
Added 1 premium regional stamp sets:
group-3
Added 12 stamps for Sound of the World:
  • Đàn Bầu
    (🇻🇳)
  • 가야금
    (🇰🇷)
  • Akkordeon
    (🇩🇪)
  • Ondes Martenot
    (🇫🇷)
  • ระนาดเอก
    (🇹🇭)
  • Guitarras Clásicas
    (🇪🇸)
  • Rondador
    (🇪🇨)
  • Gaita Colombiana
    (🇨🇴)
  • Alphorn
    (🇨🇭)
  • Cajón
    (🇵🇪)
  • Marimba
    (🇬🇹)
  • Contrabass Bugle
    (🇨🇦)
group-4
Added 8 stamps for Beautiful Lighthouses:
group-5