Those chips ordered in 1951
1st original order...
3000 Blue 50c
1500 Red 25c

Additional orders

1951...800 Red (later in the same year)
1952...500 Red

1952...2000 Red
2000 Blue

There are 4 different order cards...all this info is on 1 card with add on written in.
They started adding inserts to their chips in 1958.