Can anyone help with the design number of the Perthshire paperweight shown below please? It has a central horses head cane, and 5 other horse themed silhouette cane, all on upset muslin. It is a standard 'large size' weight at approx. 3 inch diameter, with a Perthshire label and 'P1983' cane in the base. I cannot find it in the Perthshire book (though that may be because I have missed it, despite several searches). There is an equine theme weight from the same time - the PP67 - but that is a medium sized concentric design.