Membrete corporativo financiero clásico en estilo grabado

Print-ready letterhead template for membrete corporativo (finance). Company brief: membrete corporativo. Style: traditional engraved, monochrome elegant palette. Header band with placeholder logo + company name. Footer strip with placeholder address, phone, email, website, registration number. Watermark: grid lines. Generous text area for body copy. A4 portrait, no watermarks (other than chosen design). No real registration numbers or addresses — use clean placeholders. No fake government seals. Target search intent (rendered visually, no on-image text): "membrete corporativo" (es).