The second catcher is a Masport, I tried giving them away for free for nesting boxes but in the end I just cut them up and put them in the household rubbish bin
Yep, and it's for one of the older models, that's very uncommon nowadays.
Interesting what you say about nesting boxes Norm; the 'pink front' secondhand shop in Traralgon sells old catchers for just this purpose. And she has trouble shifting them, too - and there are a lot of folk who keep chooks around here.
For those who don't have experience with chooks, they like a 3-sided, roofed nesting box for laying their eggs.