Analog clocks -- by face markings
Arabic numerals, 1-12: 26
Arabic numerals, only 12, 3, 6, 9: 3
Roman numerals with IIII: 1
Roman numerals with IV: 0
Numbers spelled out as words: 1
Dots or markings at each hour but no numbers: 2
No markings whatsoever: 2
Additionally, 4 of the above clocks mark minutes in 5-minute intervals in addition to hours.
Digital clocks -- by display technology
LED, red: 1
LCD: 1
Analog flip display: 1
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