Hi, more then likely if you see a crown w/cross it would be Derby & Royal Crown Derby, would it have a "D" mark too?
The crown on the bottom of a staffordshire toby rug, just proves authenticity. This is a symbol that basically says, "this is real." If it's not there, it's not real.
crown marking ? any type of dental crowns would have to be shaped like our natural teeth. There are 2 types of porcelain crowns. the first being porcelain fused metal crowns and secondly an all porcelain crown. The only difference between the two is that for a porcelain fuse metal crown, the metal can usually be seen as a line at the neck of the crown. Try this article on porcelain crown, there is a detail explanation there. http://www.intelligentdental.com/2010/03/28/interested-in-the-different-types-of-porcelain-dental-crowns/
The cross and crown are a symbol of the reward in heaven coming after the trials in this life. (see James 1:12 and Matthew 10:38. As a specific symbol it has been used since at least medieval times.
The value of your vase can vary depending on its age, condition, and overall demand in the market. Generally, Staffordshire ironstone pieces with unique markings can attract collectors and can range in value from $50 to several hundred dollars. To get a more accurate estimate, consider consulting with an antique appraiser or searching for similar items that have been sold at auction.
The symbol for Saint Helena is the iconic outline of Napoleon's tomb, which is located on the island. This symbol represents Saint Helena's historical significance as the place where Napoleon Bonaparte was exiled and eventually died.
porcelain crown
d2750 Is for a porcelain fused metal crown and d2790 is for a temp crown
Alboth &Kaiser
Fluoride varnish is usually what is used in a mouth with porcelain crowns, and is safe to use on porcelain crowns, though direct application of the varnish is usually not necessary, since the porcelain crown is not your actual tooth structure.
Royal
The symbol for Melco Crown Entertainment Limited in NASDAQ is: MPEL.
The symbol for Crown Castle International Corporation in the NYSE is: CCI.