Ninety from Brazil – 2023 90 Reis Stamp of 1843 (series: UPAEP 2023: Bull’s Eye Stamps, 180 Years). UPAEP, the Union Postal de las Américas, España y Portugal, is a postal union where countries issue joint stamps for shared themes
Netherlands – 1962 Series: Numerals
Netherlands – 2006 NL Multiple Surplus Stamp
Nippon/Japan – 1968 Postal Code Type II (Series: Postal Code Systems)
Postcards Etc 
Stamps with numbers are attractive. OF course, the last one is the best one!
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I quite like the old Dutch series – bright colours and the curlicues. And, big numbers. (ours are sometimes so small and hard to read)~violet
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that’s a clever one for N – Finnbadger
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Numbers was a great theme for N!
Lisa
https://thisandthatablog.blogspot.com/
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The Dutch are so inventive with their ‘number’ stamps of course the Brazilian bullseye is a classic, I like the colour.
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