Complete specifications of the 1946 Hungarian 10,000 B-Pengő

What does “10,000 B-Pengő” actually mean?

The denomination requires translation across two parallel naming systems — one Hungarian, one international — that can confuse collectors approaching the note for the first time.

The Hungarian word billió in the long-scale numbering system used in Hungary (and most of continental Europe in the 1940s) refers to 10¹² raised to the second power, equivalent to 10¹⁸. In English short-scale notation, this is one quintillion.

The note’s stated face value — “10,000 B-pengő” — therefore translates as 10,000 multiplied by 10¹⁸, or 10²² pengő. Written out in full digits, the face value is:

10,000,000,000,000,000,000,000 pengő
(10 sextillion in long-scale, 10 quadrillion in short-scale)

By either notation, the 10,000 B-pengő carries the highest face value of any banknote ever to circulate as functioning money. No higher face value has ever been used in transactional commerce by any government in any economy.

Design of the 10,000 B-Pengő

Obverse

The obverse is dominated by deep blue and purple tones, with white background panels behind the denomination text. The Hungarian text “Magyar Nemzeti Bank” (National Bank of Hungary) appears across the top in serifed capital letters. The denomination “10,000 Billiópengő” appears in large text in both numerical and written-out form.

In the central panel, a stylized portrait engraving appears — the standard portrait used across late pengő-era issues, typically a generic classical female figure representing the Hungarian state rather than a specific named individual. The note carries the signatures of the President of the National Bank of Hungary and the Chief Cashier, in print form rather than as personal signatures.

The serial number, in two letters plus six digits, appears in the upper-right corner of the obverse.

Reverse

The reverse is comparatively simple, with light blue and beige tones, the denomination repeated in both numerical and written-out forms, and decorative border patterns. The reverse design across the late pengő series was deliberately simplified to allow rapid printing as denominations escalated.

Historical context: how the 10,000 B-Pengő came to exist

The 10,000 B-pengő was issued during the final acceleration phase of the Hungarian pengő hyperinflation, which remains the worst hyperinflation episode in recorded human history. Peak daily inflation in July 1946 was approximately 207 percent, with prices doubling every fifteen hours.

The standard pengő (P) had been progressively replaced by higher-order units as inflation accelerated. The mil-pengő (mp.), equivalent to 10⁶ pengő, was introduced in May 1946. The billiópengő (B-pengő), equivalent to 10¹⁸ pengő, was introduced in early June 1946. Within the B-pengő series, denominations escalated rapidly:

• June 1946: 10,000 mil-pengő (10¹⁰ pengő)
• June 1946: 100,000 mil-pengő (10¹¹ pengő)
• Early July 1946: 1,000,000 mil-pengő (10¹² pengő)
• Mid-July 1946: 100 B-pengő (10²⁰ pengő)
• Mid-July 1946: 1,000 B-pengő (10²¹ pengő)
• Late July 1946: 10,000 B-pengő (10²² pengő) — Pick P-132

The 10,000 B-pengő was the highest B-pengő series denomination actually released into circulation. Higher denominations — including the 100,000 B-pengő and the 1,000,000 B-pengő — were designed and printed but not officially issued before the currency reform of August 1, 1946. A separately printed but never-issued 100 quintillion pengő note (in the underlying pengő notation) also exists.

The 10,000 B-pengő circulated for approximately four weeks. In that time, it transitioned from a high-end transactional currency to a curiosity preserved as a souvenir of monetary collapse.

The end of the pengő and the introduction of the forint

On August 1, 1946, the Hungarian government replaced the pengő with the forint, ending the hyperinflation. The conversion rate — 400 octillion pengő to 1 forint (4 × 10²⁹) — is the largest documented monetary conversion in human history.

All pengő banknotes, including the 10,000 B-pengő, became worthless as currency on this date. From August 1, 1946 forward, the 10,000 B-pengő existed only as a historical artifact and collector item.

Market pricing and condition (mid-2026)

Because the 10,000 B-pengő circulated for only weeks before demonetization, most surviving examples exist in well-preserved condition — handled briefly during the crisis, then saved as souvenirs. As a result, Used Almost Uncirculated and Choice Uncirculated examples are relatively common, while genuinely heavily-circulated examples are scarcer.

Frequently Asked Questions

What is the catalog reference for the 1946 Hungarian 10,000 B-Pengő?

The note is catalogued as Pick P-132 in the Standard Catalog of World Paper Money (Krause/Pick).

What does “B-Pengő” mean?

“B” stands for the Hungarian word billió, which in the long-scale system used in Hungary in 1946 referred to 10¹⁸ (one quintillion in U.S. short-scale notation). One B-pengő therefore equals one quintillion pengő.

What is the actual face value of the 10,000 B-Pengő?

10,000 multiplied by 10¹⁸, or 10²² pengő. In digits: 10,000,000,000,000,000,000,000 pengő. In U.S. short-scale notation, that is 10 quadrillion pengő.

Is the 10,000 B-Pengő the highest-denomination banknote ever issued?

It is the highest-denomination banknote ever to circulate as functioning money. The 100 quintillion pengő (a separately printed note with a face value 10,000 times higher) was prepared by the National Bank of Hungary in 1946 but was never officially released into circulation before the pengő was demonetized. By the circulation standard, the 10,000 B-pengő holds the record.

When was the 10,000 B-Pengő issued?

The note was issued in late July 1946 during the final acceleration phase of the Hungarian pengő hyperinflation. It circulated for approximately four weeks before the pengő was replaced by the forint on August 1, 1946.

Who issued the 10,000 B-Pengő?

The Magyar Nemzeti Bank (National Bank of Hungary).

Is the 1946 Hungarian pengő still legal tender?

No. The pengő was replaced by the forint on August 1, 1946 at a conversion rate of 400 octillion pengő to 1 forint. All pengő banknotes, including the 10,000 B-pengő, have had no monetary value since that date.

How much is a 1946 Hungarian 10,000 B-Pengő worth?

As of mid-2026, lightly circulated to Used Almost Uncirculated examples trade in the $90–$179 range (often with BOGO sets available). Choice Uncirculated raw examples sell for $150–$220, with PMG-graded examples ranging from $200 at PMG 64 to $500 at PMG 66 EPQ.

Why was the 10,000 B-Pengő circulation so short?

By late July 1946, the Hungarian pengő had effectively ceased to function as money due to extreme hyperinflation. The forint was already in preparation. The 10,000 B-pengő entered circulation knowing the currency reform was weeks away. Its brief circulation life is why most surviving examples are in well-preserved condition.

How does the 10,000 B-Pengő compare to the Zimbabwe 100 Trillion?

Both are iconic modern hyperinflation banknotes. By face value, the 10,000 B-pengő (10²² pengő) significantly exceeds the Zimbabwe 100 Trillion (10¹⁴ Zimbabwe Dollars) — eight orders of magnitude higher. By global recognition, the Zimbabwe 100 Trillion has been the more visible of the two due to its 2008–2009 timing and extensive Western media coverage.