I am very grateful to Christopher Proudlove for informing us: I think you'll find that's penwork - the name given to the nineteenth-century decorative technique in which many of the technical, aesthetic, and social contexts of the day are reflected in its intricate designs. Many penwork designs seek to simulate the glamour and richness of ivory-inlaid furniture, while others mimic the hardstone mosaic substitute, scagliola.It is alive with gorgeous Regency vignettes of girls and boys, mothers and fathers, their costumes all depicted in meticulous detail. The sampler to which it is now attached is probably later in date - 1832 - and is for auction together with another sampler tomorrow at Christie's in London. The lot number is 342 and the estimate for both samplers is £700- £1,000. Click here for more details.