Found by Ian Suddaby near Plean.
This example is not in my possession.
The manufacturer is unknown but RB is a recognised stamp for P & M Hurll although it is not known what it stands for.
Garnqueen Fireclay Works, Glenboig, Lanarkshire
Alternative brickworks include:
- Gartliston Fireclay Works, Glenboig, Lanarkshire.
Building bricks at Garscadden Works, Drumchapel.
Ian states – P163 RB
Taking the RB bit first, it’s likely this is either a brand name used by, or a customer of the maker, P&M Hurll of Glenboig nr Glasgow. We don’t know what RB means though, possibly Refractory Brick?
P163 is also unknown but as it was found near to East Plean Colliery, Pit No. 4, Plean, Stirlingshire, P might be for Plean and 163 an order number.
Anyway, it’s easily shown that it formed a tight circle only 12″ diameter and the brick itself is 6½” wide and 2¾” thick.
.
(Note – SBH – The stamp may read R8).