Thoughts on a Saturday evening after today viewing Ford vs. Ferrari.
If you want good results, go with the best. Which auction house is the 'best'? Hard to define but if you want to make an informed decision, see which ones have handled items like the ones in your friend's collection. Does the auction house have a following of modelers who buy brass engines or is their following the middle of the pack modelers who have no use for nor the pocket book for brass? Or bottom feeders? Does the auction house deal in ubiquitous items or rare, upscale items? The actual transaction/bidding procedure doesn't matter as much as their following.
John in Lansing, ILL