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keyword

how to tell if a 1981 hundred is real

Monthly search volume and cost-per-click data for "how to tell if a 1981 hundred is real" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=how+to+tell+if+a+1981+hundred+is+real&country=us" +--------------+------------------+ | volume | 50 | | cpc | $1.54 | | competition | 0.04 | | country | US | | updated | 2026-06-07 | +--------------+------------------+
All search data is retrieved via the Google Ads API — you get the same numbers you'd see in Google Ads.

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
old 100 dollar bill 22,200 $0.06 8/20
series 1981 a 100 dollar bill 2,400 $0.04 16/20
1974 series 100 dollar bill 1,900 $0.06 9/20
1981 series 100 dollar bill 1,600 $0.05 18/20
1981 $100 bill 1,600 $0.07 16/20
1981 us $100 bill 1,600 $0.06 9/20
1981 series 100 dollar bill real or fake 140 $0 13/20
fake 1981 series 100 dollar bill 110 $0.04 11/20
1981 one hundred dollar bill security features 50 $0 12/20
old 100 dollar bill 1981 30 $0.07 9/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://api.seodata.dev/v1/keyword?q=how+to+tell+if+a+1981+hundred+is+real&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt