Hi - this is sort of a "list" I recently sent a friend (june 2014) on things to look for when he was just getting into picking garag/estate/thrifts. Keep in mind it was written for a specific person I've known a long time.
Watches --- some of the "junk" watches sell for money -- I always buy Timex Expedition and Citizen Eco Drive --- they sell very well. For anything not marked “China” just do a quick google search. Good vintage names include Gruen, Elgin and Hamilton – but only buy men’s watches. Woman’s do not sell unless they are gold or by a very good maker (e.g. Lecoultre / omega etc). Also – keep your eye out for calculator watches, seikos, casio G-shock, and any kind of vintage computer or game watch. A good vintage HP calculator can bring $500+ dollars.
Jadeite Mugs By Fire King - these go up and down in value but are great buys for a few bucks. Thicker the better. pay attention to conditon
Dansk Peppermills in Teak
Moscow Mule Mugs in copper
Gold bangle bracelets at scrap -- they sell for twice scrap
Gold filled eyeglasses -- these are always lying around thrift stores - worth a few bucks each
Any type of gun magazine / clip - it is legal to sell them on ebay and they bring a fortune for rare or vintage pieces
Here's the deal with the flatware. The absolute best is the danish modern stuff from the 50's and 60's. Those pieces sell for 30-70 per spoon/fork/knife etc. The great thing is, you usually come across a whole set -- 45 pieces + -- so its a huge cash out. Best ones I've hit yet were Oneida Community Heirloom with the Cube Mark. Also look for Arne Jacobsen, Gense Sweden, Dansk and anything else made in Denmark. No body buys this flatware **** but its worth a fortune on ebay.
Cutco knives – they sell very easily – any type or age. Decent big pieces will regularly bring $50-$100.00. Also – sets of steak knives by cutco. You will see these frequently.
HP and TI Scientific calculators – every kid buys them for college and then the parents dump them for a buck. You can get $40-200 depending on the model.
Early medical texts – I sold one last month for over $1,000.00. The more illustrations the better.
Any original period Danish modern knick-knacks – go to ebay, then shop by category, then Antiques, then periods and styles, then MidCentury Modern. Sort listings by sold items, ending soonest first. This is the best way to familiarize yourself with these types of items.
Anything Rail Road related (not model RR - but real RR) / Also steam ships
Vintage razors and razor sharpening stones. Just search ebay for “vintage razor” and then “antique razor”
Fountain pens
Anthying military from Vietnam or earlier
Any book published before 1900 if you can get it for a buck – these are hit or miss, but it only takes one to get hooked on them
Anything by Dansk that’s not made in China
Mikasa Crystal (not marked so you need to memorize it
Royal Copenhagen – buy anything for $1.00 - $5.00. everything except for the commemoroative plates.
Old Keys and Old locks
Anything gun related – holsters, clips, belts, sights
Cameras and parts – especially old polaroids. Look for names like Leica, Zeiss, Canon. Doesn’t matter how old they are. Often the lenses are worth 10 times what the cameras are. Check lenses for damage. If its not leica, zeiss or Vintage Canon/Nikon - then buy cheap unless you know the piece.