diff --git a/frontend/src/lib/timeline/EventCluster.svelte b/frontend/src/lib/timeline/EventCluster.svelte
index 09168458..9fa1f2e8 100644
--- a/frontend/src/lib/timeline/EventCluster.svelte
+++ b/frontend/src/lib/timeline/EventCluster.svelte
@@ -1,6 +1,7 @@
 <script lang="ts">
 import * as m from '$lib/paraglide/messages.js';
 import LetterCard from './LetterCard.svelte';
+import GlyphLabel from './GlyphLabel.svelte';
 import { entryKey } from './entryKey';
 import { getAccentConfig } from './eventCardConfig';
 import { timelineDateLabel } from './dateLabel';
@@ -107,7 +108,7 @@ const hiddenCount = $derived(letters.length - CLUSTER_PREVIEW);
 			class="flex items-center gap-2 border-b border-line px-3 py-2"
 		>
 			<span class="font-serif text-sm font-bold whitespace-pre-line text-ink">
-				<span aria-hidden="true">✉</span>
+				<GlyphLabel glyph="✉" label={m.timeline_letter_glyph_label()} />
 				{title}
 			</span>
 			<span data-testid="event-count" class="font-sans text-xs text-ink-3">· {count}</span>
diff --git a/frontend/src/lib/timeline/EventCluster.svelte.spec.ts b/frontend/src/lib/timeline/EventCluster.svelte.spec.ts
index 4e4ebc24..ee19aa2d 100644
--- a/frontend/src/lib/timeline/EventCluster.svelte.spec.ts
+++ b/frontend/src/lib/timeline/EventCluster.svelte.spec.ts
@@ -1,6 +1,7 @@
 import { describe, it, expect, afterEach } from 'vitest';
 import { cleanup, render } from 'vitest-browser-svelte';
 import { tick } from 'svelte';
+import * as m from '$lib/paraglide/messages.js';
 import EventCluster from './EventCluster.svelte';
 import { makeEntry } from './test-factories';
 import type { components } from '$lib/generated/api';
@@ -98,6 +99,15 @@ describe('EventCluster — contained event card (#850)', () => {
 		expect(document.querySelector('[data-testid="event-edit"]')).toBeNull();
 	});
 
+	it('pairs the cross-year ✉ glyph with an sr-only label so it is not a silent glyph (finding #6)', () => {
+		render(EventCluster, { letters: letters(2), title: 'Briefe von der Front' });
+		const header = document.querySelector('[data-testid="event-header"]') as HTMLElement;
+		const hidden = header.querySelector('[aria-hidden="true"]');
+		expect(hidden?.textContent).toContain('✉');
+		const srOnly = header.querySelector('.sr-only');
+		expect(srOnly?.textContent).toBe(m.timeline_letter_glyph_label());
+	});
+
 	it('renders an HTML-bearing event title verbatim as text, never as markup (REQ-010)', () => {
 		render(EventCluster, {
 			letters: letters(1),