We are looking to buy just about all intermediate to advanced worldwide stamp estates and collections including unused US postage stamps, old letters and correspondence.
Gas is too expensive and time is too precious to waste. Give them to a child! Age 6-12 is best.
Stamp "Investment Portfolios" often sold via telephone solicitation from boiler room operations in Las Vegas NV or Boca Raton FL are generally a scam and a fraud. A man that came to see us "invested" $40,000 with these jerks at the rate of about $1,000 every couple weeks. I could not even give him $50 for his "investment". The stamps were garbage with no value. DO NOT buy stamps from slick salesmen promising to buy them back for at least what you paid for them at some later date. They will be out of business in a few weeks and you'll be out of luck.
Just about anything stamp related not on the above list. (Plus Ancient and Medieval Coins pre-1700)
Collections that have the potential for most value will be individual country collections with just one country in one album or a narrow group of countries such as French Colonies or British Africa. When you see black or clear "plastic" stamp mounts protecting the stamps this is usually a very good sign. These albums will often be Scott Specialty Green albums, Scott National or Minkus Albums, Lighthouse, Lindner, Davo, or Schaubek albums. (There are many other foreign made individual country albums - and most are very good especially if full of stamps in those stamp mounts!)
Also good are large multi-volume worldwide collections. These are most often Scott Blue International albums or Minkus Global albums. (A single-volume worldwide album will rarely have value unless the album was printed BEFORE 1930 (check the copyright) AND is fairly full.)
If the collector was buying stamps at auction or from local stamp dealers or stamp shows this is a good sign. If they were buying mail order (from companies other than Mystic, Kenmore, Harris, or Garcelon etc. noted above) this is good. Especially good finds can be from Herrick, Bombay or other new issue dealers. These will not necessarily be in albums as many collectors saved them as they came in the mail. Often in glassine envelopes or bags but NOT pre-printed approval envelopes. Lots of receipts from auction houses is a very good sign.
United States stamp collections with lots of stamps on the first 20 pages can be very good. If only a few stamps on these pages it is probably a beginner collection. Good US Albums are Scott National and Harris Liberty if very full in the early pages. Also United States albums with lots of still mint unused uncancelled US stamps can add up to some value worth bringing in.
Mint United States Sheets, Plate Number Blocks, loose mint US postage stamps, annual year books with stamps, or year sets since 1935, and even very recent mint US postage stamps will still have value.
Old correspondence from before 1920 and especially from the Civil War era or earlier can be very good. DO NOT tear the stamps off the envelope. Old Postcards can also be good if before 1920. Again DO NOT tear or soak the stamps off the card. (Your parents/grandparent's love letters or WWII letters will usually not have any value unless they were writing to/from a very unique place where few soldiers were stationed)
If your collection is towards the advanced end there should often also be very good reference books we would want to buy and we can purchase the unused supplies and tools of the collector in addition to the stamps and envelopes.
If there are coins with the collection we can ask that you call Steve Rye of A-1 Coins in Scottsdale. (480) 947-4141 or email@example.com. We sell all the coins we find to Steve as well and we do not retail any coins or currency at all. US Dimes, Quarters, Halves, and Dollars from 1964 and back have silver in them and will add up quickly to a nice sale for you. An exception to this is that Michael does buy Ancient and Medieval Coins but for his own collection. We are therefore a top buyer for Ancient Greek, Roman, Classical and Medieval Coins and generally any coins issued before the year 1700.
When bringing or sending your collection to us DO NOT do anything to organize it as you may end up damaging fragile items. Best is to leave the collection as is and if it ends up not being very valuable you will have saved yourself a ton of work. Do not bother making any sort of inventory to "help" us as we will not use it anyways. We need to see the actual stamps and evaluate the condition and proper identification.
We are very busy travelling to shows across the country so you may have to wait a few weeks until we return. If you have a nice collection it will be worth your wait as we are the second largest show dealer in the USA and we need lots of stock to keep up with our sales! It is well known in the industry that the dealers who take out big full-page ads in the stamp publications saying they pay the highest in actuality pay crazy low prices as they have to pay for all those ads and mass mailings to get you to sell to them. Also once they buy from you they sell to dealers like us. So avoid these middle-men. If you are shopping around for the best offer: Call us last. You'll be glad you did. (or call us first and save the trouble!) We are the only major stamp dealer in Metro-Phoenix that specializes in stamps only. (and one of the few in the USA for that matter) The others do most of their trade in coins and jewelry. Stamps are not a sideline with us. We sell more - we pay more.
If you live out of town you can also SHIP your stamps to us for an immediate offer. We get shipments in every week of small to large collections that meet the criteria above of what we are looking to buy. The US Post Office has a Medium Flat Rate Priority Mail box that is shaped like a shirt box that will hold an album or two nicely. FedEx Ground is also a great way to ship using your nearest FedEx Office store. When shipping to us first put the items inside a plastic bag just in case the box gets wet in transit. If we are out at a show we will take care of your package the day after we get back. Email to let us know what you are shipping and when and we'll watch for it and email you when it arrives.
Sometimes a collection is so large that it cannot be shipped easily or someone local in Arizona just can't bring that much to the office or is old and can't travel to us easily. We can and do make house calls all over the USA. We have bought collections from just about every state in the US as our show schedule takes us all over the country. It may take some time for us to get to you but it will be worth the wait since you'll be getting so much more for your collection by selling to us and avoiding all middle-men.
We prefer to be contacted by email at iShop@worldwidestamps.com . Email will get you the fastest response usually within a few hours and most likely within minutes. We post our next open hours in the store on top of the first page of our website. Michael is also often on the internet for live chat so please click on the live chat link if it says he's online.