| Cyfernod / Ref No | COB11/13/4/3 |
| Rhif Cyfeirnod Gwahanol / Alt Ref No | Formerly COB11/13/17 |
| Teitl / Title | O.S. sheet Caerns. IV.15. |
| Ddisgrifiad / Description | Showing sites marked with red and yellow numbered dots in Pen-sychnant area [meaning unknown]. Scale: 25 to 1 mile. |
| Dyddiad / Date | 1913 |
| Disgrifiad Ffisegol / Physical Description | [Torn condition] |
| Graddau / Extent | 1 Roll |
| Lefel / Level | Item |