Crossover, Straight Rails

Details
Title
Crossover, Straight Rails
Number
# 159
Parts
25
How is this number calculated?
Parts
100%
(25)
Released
1976
Theme
Build instructions
Parts
There are 3 different parts with a total quantity of 25.
Standard parts
(3 unique parts - Total quantity of 25)
16 x
3228a

16 x
3228a
1 x
3231

1 x
3231
8 x
3034

8 x
3034