50 GF Smiths slip-in mounts, black cardboard with silver blocked border. All with an outer dimension of 9 1/4" square. Re-packaged, but unused.
- 30 x 6"x8" rectangle aperture
- 12 x 6"x8" oval aperture
- 8 x 6"x8" octagonal aperture
Dispatched with Royal Mail 2nd class
Internal ref: 015-016-017-018-019-020-021