“NOT SO REF 10-31”是使用 FontVibe AI 创作的镂空喷绘文字效果。橄榄绿军用镂空模板大写字母，带连接桥断口和柔和喷溅边，喷在钉有金属护角的旧木箱板上。

A square image of a stamped-and-stencilled mark on a rough, weathered grey concrete wall. Concrete aggregate pits, hairline cracks and faint older grime show through the image. Harsh raking light from the left throws tiny shadows across the pitted surface. The wall is the whole scene. The mark has two parts. The main text reads "NOT SO" in huge capitals on one line, with a wide word gap. It fills about 80% of the frame width and sits slightly above the vertical centre. The letters are bold, upright and condensed, in the style of a rubber-stamp serif. They have chunky slab serifs, moderate stroke contrast, tight spacing and sturdy terminals. Cut-template bridges interrupt the letters: the counters of O and the bowl of S are held by thin unpainted concrete-coloured ties. Each letter has a hard, crisp inner edge where the stencil masked the wall, and a soft speckled overspray halo a few millimetres beyond it. The paint is matte, pigment-dense, deep black. It is thickest at stroke centres and thins into dry grey, speckled coverage at the edges, with concrete texture showing through. Small voids sit where the stamp did not make full contact, and the impression varies in pressure from letter to letter. A few thin drip runs descend from the heaviest paint, from the bottom of the S and the O. Under the text, a thin rectangular stamp border frames the lower edge as a slim bar, about 50% of the width. It is sprayed in the same black and slightly uneven. At the bottom, a tiny stencilled line in a plain condensed sans reads "REF 10-31". It is about 14% of the width, with faint overspray. Two small registration cross marks and a few stray paint speckles sit near the corners. The palette is limited to two tones: black paint on cool concrete grey. The result should feel like an official, worn, authoritative rejection mark.