Textile Sample from Sample Book

The image shows a close-up of a textile sample from a sample book by an unknown artist. The sample features a blue fabric with a dark brown pattern on the left side and a dark brown fabric with a lighter brown pattern on the right side. A yellow border surrounds the fabrics. The blue fabric has a small white rectangle with the number "3669" printed in black on the left edge. A similar white rectangle on the right edge of the dark brown fabric displays the number "3670". The yellow border has a speckled appearance.