We do not have any data on exchange rates of May 1969. Since January 2018 only mid-market rates were reported; see BBEX3.M.MAD.USD.CA.AC.A01.
Source
Bank Al-Maghrib (formerly: Banque du Maroc), Rabat.
Comment on
1990-05
On 2 May 1990, the dirham was devalued. We recorded the following exchange rates (buying/selling rate): 2 May 1990: USD 1 = MAD 8.8016 / 8.8468 Calculated devaluation of 25 April 1990: 8.9%.