न्यायमञ्जरी: प्रथम भाग (आचार्य जयन्त भट्ट - पं. सूर्यनारायण शुक्ल सम्पादित, काशी संस्कृत ग्रन्थमाला)

or broken type? It looks like a spacer or broken type for क्व or कदा. But the letter क is clearly visible, and चित् is clearly visible. If it was क्वचित्, the व might be broken or it's a dot. Let's look at: यदा क्वचित् प्रथमं - usually क्वचित् प्रथमं प्रयुक्तमासीत्.
Wait, let's look at the dot: it is right next to क. It looks like यदा .क चित्प्रथमं or यदा कचित्प्रथमं.
Wait, let's look at how other words are printed:
L10: श्रवणात् , (space before comma)
L14: तदनुत्पादात् , (space before comma)
L21: दुराशैवेयम् , (space before comma)
L27: चानभ्युपगमात् , (space before comma)
L32: यदा .क चित्प्रथमं - wait, could it be यदा क्वचित्प्रथमं? Let's check if the dot is a broken ligature. It's safe to write यदा क्वचित्प्रथमं or यदा क चित्प्रथमं? Wait, let's look really closely at that character:
Is it a dot? It looks like a period . slightly below