Shown in the 1969 catalogue, these are pattern Number 1 Architectural Slabs and measure 7" x 3".
| Sold in November 2000 for £265 this is a Number 1 slab in Flint. 7" x 3". | |
| Sold in December 2001. | |
| Sold in June 2001. | |
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| Sold in November 2001. | |