That is not a recognized secretarial style (those only appear "rarely" and much earlier - generally 1973-76 and some 1980. Those would be by Ken Pitt, Cherry Vanilla and some by Corrine Schwab - this information only came to light in March/April of this year, recently confirmed by Bowie's camp. Bowie preferred to sign himself when possible - where did you hear this might be a secretarial style from such a late date? I don't like it though - too smooth and bubbly for me. However, '89 is more MarkG's territory.
Thanks Eric. I totally agree it doesn't look right. Bubbly is a good word. Numerals are off too. It's the inscription that made me think maybe secretarial. Looks familiar. Not Bowie's handwriting though.
Legible inscriptions and so on often indicate secretarials but I am unaware of any from that period or after - just the ones I mentioned. After C. 1980 it is either forgery or genuine. This inscription does look familiar to me though...this hand...