| RefNo | RHB/9/4/1/4/7 |
| Previous numbers | J.87 |
| Level | Item |
| Title | 5-1/4 inch computer disk, untitled, R H Brown |
| Date | 20th century |
| Description | Double-sided, double-density.
Make: DISKXPRESS
Deleted inscription: 'Dud?' |
| Format | Digital |
| AccessStatus | Closed |
| AccessConditions | Items remain closed for 30 years from date of creation. |