There was the full set of 50 that sold a few years ago.
This lot of 44:
https://sports.ha.com/itm/boxing-car...a/7051-80859.s
This batch of 38:
https://sports.ha.com/itm/boxing-car...a/7075-81059.s
The eBay batch a few months ago that someone totally stole.
And 1 or 2 others, I think.
As far as I'm aware, most of the batches are not put together by contemporary hobbyists, but are finds kept together. Seems the only chance at completing a set now is this avenue