Block of 10 – 1998 USA 40¢ Breast Cancer Research MNH Scott B1 Semipostal

Block of ten 40¢ Breast Cancer Research semipostal stamps issued July 29, 1998, America’s first semipostal stamp. Sold at 40¢ (32¢ postage + 8¢ surcharge), with funds supporting breast cancer research. Designed by Ethel Kessler, a breast cancer survivor, with artwork by Whitney Sherman depicting a woman in a recommended self‑exam pose inspired by Artemis. Identified as Scott B1. All stamps are mint, never hinged, with original gum and clean perforations.

- Issue Year: 1998
- Denomination: 40¢ (32¢ postage + 8¢ surcharge)
- Subject: Breast Cancer Research
- Format: Block of 10
- Scott Number: B1
- Designer: Ethel Kessler
- Artist: Whitney Sherman
- Type: Semipostal (charity surcharge)
- Condition: MNH (Mint Never Hinged)
- Gum: Original gum
- Theme: Health, awareness, medical research
- Use: Collecting, display, albums