I would PM VDF member The Ploughman.Those pics look really unclear and the drums way to perfect to me,as well as the reference to picking out a snare drum from his private collection reference.My spidey sense is tingling,especially that the seller is in Ontario.
I know you love vintage drums,but I would educate myself some more,and depending on where you live,go to a drum show or a store that sells authenticated vintage drums.Places like Steve Maxwells two drum shops in Chicago I think and NYC ,have the real deal.Nothing beats hands on experience.
I would also purchase some or all of Rob Cooks,John Aldridge,or Harry Canganys books on American vintage drums.And lastly....take your time,learn all you can.There are plenty of humanoids selling fakes,as well as some who were duped,and just want to unload their mistake.
The market will still be what it is for a while now.This place is full of knowledge and expertise,that you just can't put a price on.
Steve B