Bulgaria and the euro government, notably economy minister Petar Dimitrov, have speculated about unilaterally introducing the euro, which was not well-met by the European Commission. The lev is not part of ERM-II, but since the launch of the euro in 1999, it has been pegged to the euro at a fixed rate of €1 = BGN 1.95583 through a strictly managed currency board. In all of the three latest annual assessment reports, Bulgaria managed to comply with four out of the five economic convergence criteria for euro adoption, only failing to comply with the criteria requiring the currency of the state to have been
Fractional currency were employed: experimental paper, adding surcharges, overprints, blue end paper, silk fibers, and watermarks to name a few. Fractional currency shields which had single sided specimens were sold to banks to provide a standard for comparison for detecting counterfeits. Postage and fractional currency remained in use until 1876, when Congress authorized the minting of fractional silver coins to redeem the outstanding fractional currency. Three people were depicted on fractional currency during their lifetime: Francis E. Spinner (Treasurer of the United States), William P. Fessenden (U.S. Senator and Secretary of the Treasury), and Spencer M. Clark (Superintendent of the National Currency