Conclusion
The intrinsic value of the guilder declined steadily from c. 1560 to c. 1700. However, the purchasing power of the guilder (and the index of wages associated with it) shows a somewhat divergent curve: from 1560 to 1590 it declined more sharply than that of the intrinsic value, while on the other hand after 1590 it showed greater stability than the gold and silver values of the guilder.
Conversion into present-day units is extremely hazardous and the results are always open to challenge. However, after balancing the various advantages and limitations of the three methods one against the other, it may be concluded that one guilder in 1560 was equal to approximately 1,000 BF (Belgian Francs) today. In 1590 it was worth approximately 500 FB and in the seventeenth and eighteenth centuries about 400 BF. The 1969 rate of exchange being $ 1.00 = 50 BF and £ 1.0.0 = 120 BF, the following table may be given:
| Approximate value of one guilder |
|
| 1560 |
1,000 BF = $ 20.00 = £ 8.6.8 |
| 1590 |
500 BF = $ 10.00 = £ 4.3.4 |
| 17th-18th cent. |
400 BF = $ 8.00 = £ 3.6.8 |
It should be remembered, however, that whereas the cost of living in Belgium and Great Britain is roughly the same, that in the United States is much higher. An amount of 1,000 BF in Belgium or £ 8.6.8 in Great Britain therefore represents a greater purchasing power than $ 20.00 in the United States (probably in terms of dollars about $ 30.00 to $ 35.00).