1. Rarity: The 1934 B US $100 bill is scarce compared to other notes of its era. It was produced during the Great Depression when money circulation was relatively low.
2. Condition: The condition of the bill is crucial. Factors such as wear and tear, folds, tears, stains, and overall appearance can significantly impact its value. A bill in uncirculated or mint condition commands a higher price.
3. Series and Signature: The series and signature combination can affect the value. Certain combinations are rarer than others, and bills with signatures from specific Treasury Secretaries or Federal Reserve Bank Presidents may be more valuable.
4. Serial Numbers: Unique serial numbers, such as consecutive numbers, low-numbered notes, star notes, or other distinctive patterns, can increase the value of the bill.
5. Market Demand: The market demand for rare currency plays a role in determining its value. If there is a high demand for a specific note, its value can rise accordingly.
Given the limited information provided, it's difficult to determine an exact value for the 1934 B US $100 bill. If you're interested in obtaining a more precise valuation, it would be best to consult with a professional coin or currency dealer or visit a reputable coin auction house.