The dirty little secret is that most Franklin Mint issues do not appreciate significantly in value. They're made for the collector's market in the first place, and "limited edition" usually means "limited to the number of people we think will buy them ever", so for the most part you're lucky if in 20 years they're still worth what you paid for them, unless they're made from some material with an intrinsic value that's appreciated significantly (for example, the value of a piece containing 2 ounces of gold is going to be at minimum the current value of 2 ounces of gold).
As with all collectibles, a value estimate you get over the internet is worth what you paid for it, possibly less. You should take it to a dealer for an in-person estimate.
One problem is that you'd think "Franklin Mint Princess Diana Bride Doll Original" would be descriptive enough to narrow down what the thing actually is, but if you do a Google search for that, you'll quickly notice that it's not. I've seen prices for things that could reasonably be described by that phrase offered for everywhere from $40 to $400, and keep in mind that the fact that someone on eBay is trying to sell something for $400 does not mean it's actually worth $400.
The item is worth what ever it is worth to you as a individual collector.
i baught one today for 50p
An unopened 250ml Prince Charles and Diana Royal Wedding Coca-Cola bottle from 1981 tends to fetch $60 to $120 on today's market, depending on condition.
1981 Australia - Royal Wedding 24c Multicoloured - (horizontal) Mint UnHinged = $0.70 AUD Fine Used = $0.50 AUD A block of 10 would have some value above that of 10 individual stamps.
These 25p coins are worth around 50p today (October 2010) as they were mass produced to commemorate the wedding of Charles and Diana on 29th July 1981.
how much is a Princess Diana and Prince Charles money box worth
The value of the 1981 Charles and Diana wedding coin can vary depending on its condition and collector demand. Generally, these coins can be worth anywhere from a few dollars to around $50, with uncirculated or rare versions fetching higher prices. It's advisable to check with coin dealers or online auction sites for the most accurate valuation.
Diana and Charles were a popular topic for postage stamps from many countries. You will need to consult the catalogs and do some research. There are lots of stamps issued and they vary in value from almost nothing to some nice values. Most libraries will have a copy of Scott's Postage Stamp Catalog of the World. First of all, you have to identify the specific stamp or card. That in itself can be a daunting task, but most of the catalogs are well illustrated with lots of information. Once you know what item you have, the catalog will provide a set of prices that can be used to estimate value.
thousand and thousands of pounds
The value of a gold plated Prince Charles and Diana wedding coin is $115. These coins were released in 1981 to celebrate the union of the royal couple. If these coins are in immaculate condition and come in display or carrying cases, their worth is around $200.00.
500 dollars
You will have to identify what stamp you have as there were many stamps issued by many countries that commemorated Princess Diana. Consult a catalog, Gibbons or Scott to identify the item you have. It will also provide an estimated value for you.