Angola 1 Kwanza 1978

Hello all collectors,  
can anyone tell me if the 1978 Angola 1 Kwanza coin has been really struck. I have never seen its picture.
Krause catalog, NGC, Numismaster. Report this type struck on 1997, 1978, 1979, but showing only photo of 1977 without data or with 1979. Same on eBay or DelCampe.
Also collectors of Numista and Colnect show on their collection and swap list only ND or 1989.
I think it is a Krause error, because when this type appears initially on old Yeoman and on Krause World Deluxe edition of 1986, they reported only ND (1977) and 1979 dates.
May anyone tell me if they have 1 kwanza with 1978 year. Thanks
Enrico

I collect by type not year, therefore don't have 1 Kwanza 1978 (ND and 1979 are enough for me), but this site has a picture, though in low resolution ...
http://www.horizonfr.com/les_monnaie_du_monde_afrique/les_monnaies_angola.htm

Merci pour l'information.
Je suis allé sur le site pour voir la pièce décrite, mais il semble l'année 1979, pas de 1978.
J'ai envoyé un courriel pour confirmer.
Je collectionne également par type, mais lorsque j'essaie de corriger les erreurs et Krause est le rendant beaucoup ces derniers temps.

Thanks for the information.
I went on the website to see the coin described but it seems the year 1979, not 1978.
I sent an email to have confirm.
Also I collect by type but  I try to correct catalog errors and Krause is making a lot lately.

If you write to Krause asking for this correction, you could also suggest that the dates under words "DECIMAL COINAGE" be changed from 1975-1998 to 1977-1998. The reason is that new coinage - Kwanza - was created by law nº 71 – A/76 adopted on 11.11.1976. Thus in 1975 coins denominated in Kwanza didn't exist. They also didn't circulate in 1976, but only came into being in 1977, since nothing happens quickly in Angola   ...