I know that site. That's where I found about the F.P. flash bulbs.
I'll make a donation when I will have an bank account or I will put money on my "Pay Pal" acount.
But is the "Philips" FP5B a normal F or M bulb or an F.P. bulb?
http://www.flashbulbs.com/Philips_ph-1.htm
I found for sale the FP5 version... probably only for black and white films.