Dale Earnhardt older collection question

[The Vikes]

So, I'm looking for some help. My brother has a collection of old Dale Sr memorabilia, die casts, autos, etc of Dale Sr.
All of his stuff is older and he's asking me to give him some suggestions on how one would start to sell. I've been collecting
mostly football the past 25 years and if he wanted to sell football, I could help him.
Is there magazines that have values of Dale Sr stuff kinda like what Beckett does for cards? Are there serious collectors out there
for the older stuff? Any suggestions on how to maximize a collection? He lives in the Pacific Northwest, and my guess is that the market is probably stronger on the east coast.
Any help would be great.
Thanks all!

[race crazy]

Go to your LCS or online and find the most recent Racing beckett price guide. they release one every half year to year or so. it will have most all the prices on the diecasts and cards. memorabilia is more difficult to price and youll have to search ebay for similar items to get a price idea. I also suggest maybe talking to Lesracing (hes a member on here-semi retired) he is a big Earnhardt collector and might be able to give you a better pricing idea.