Thank you for submitting your items for appraisal. This appears to be a set of two decorative wall decorations composed of a wooden possibly walnut plank and an assortment of colour tiles, possibly made to promote the sale of such tiles. Such arrangments of mixed materials were popular in the 1950s to the 1970s as part of the Eames Era home decor. The estimate is based on similar items sold at auction. There is no measurement for the sentimental value you might attach to the item.