Postage Stamps. Mauritius: 1904 Express Delivery surcharge 15-Cents, grey green, inverted overprint, Cat £800 (SG E6a), fine mint, scarce.
Postage Stamps. Mauritius: 1904 Express Delivery surcharge 15-Cents, grey green, inverted overprint, Cat £800 (SG E6a), fine mint, scarce.