Hello Oliver,
I am Red Faced

.....must learn to count

.
I checked what I have and it is -
AR630-634 - (5) Ex Norwegian
AR635-694 - (60)
AX799 - (1)
AX880-898 - (19)
BB918-923 - (6)
BB925-937 - (13)
BB974-979 - (6)
BJ434-453 - (20)
BJ531-550 - (20)
BK569-588 - (20)
BK876-879 - (4)
BL220-223 - (4)
BS730-738 - (9)
BS744-747 - (4)
BS784-798 - (15)
BT470-472 - (3)
HK823 - (1)
LA157-165 - (9) Ex Iran
Total = 219
my number is still not the same as yours,
Where do we differ ? in which serial block ? I cannot see it ?

Alex