keyword

1981 one hundred dollar bill security features

Monthly search volume and cost-per-click data for "1981 one hundred dollar bill security features" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=1981+one+hundred+dollar+bill+security+features&country=us" +--------------+------------------+ | volume | 50 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-06-16 | +--------------+------------------+

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
100 dollar bills	135,000	$0.24	10/20
old 100 dollar bill	22,200	$0.06	12/20
series 1981 a 100 dollar bill	2,400	$0.06	12/20
100 dollar bill 1996 series	2,400	$0.06	11/20
series 1996 hundred dollar bill	2,400	$0.07	11/20
1981 series 100 dollar bill	1,600	$0.05	15/20
1981 $100 bill	1,600	$0.07	13/20
old 100 dollar bill real or fake	1,600	$2.27	13/20
1981 series 100 dollar bill real or fake	140	$0	11/20
how to tell if a 1981 hundred is real	50	$1.54	13/20

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=1981+one+hundred+dollar+bill+security+features&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