Notice in the roulette, Those are "Shermack" perforations. Revenues: Roulette or Hyphen Hole Perforation? Great information. Separation: perforations rouletting is made by a machine with curved cutting blades faced in alternating opposition so that the undulating roulette pattern. What are and How to Perforations: The most common roulette is the hyphen roulette, which, as mentioned before, is just a line of dash-shaped cuts.
Postage stamp separation
If the entry says it is 11 x 13, then the horizontal perforations are perf 11 and the vertical perforations are perf An imperforate strip of three Indian 4-anna red and blue Queen Victoria stamps Scott 6 is shown in Figure 1. Two such machines were built. Stamps with perforations that gauge differently at the top and bottom from those at the sides are said to have "compound perforations. Experimental rouletted stamps actually preceded stamps with perforations, but rouletting has been used much less frequently than perforating. If a single row of perforations are left off a pane of stamps, the resulting error is described as "imperf between. How neatly and easily the stamps can be separated from each other can be affected by several factors, including the gauge of the perforation how close together or how far apart the perforation holes are and the type of paper being used.
Sunday, April 19, Revenues: Perforation Types Perhaps the most significant feature of the revenue series beyond the basic battleship design is the method the Bureau of Engraving and Printing applied so that users could separate the stamps. Standard round perforations now mostly history due to die cutting used on self-stick stamps were not used on the revenues. Instead, the Bureau used both "rouletting" and rectangular perforations. The block above has been rouletted.
As you can see by looking between the stamps, there appear to be a series of cuts. These were made by a wheel with the equivalent of short knife blades on it that cut in between the stamps.
The process removes no paper and does not make a hole. By this standard a roulette is not a perforation. The block below has hyphen hole perforations. This process is a perforation process and does remove paper from the stamp sheet. Unlike normal round perforations these are oblong slots that look something like hyphens, hence the name hyphen hole. When the stamps first appeared in they were exclusively scored using rouletting. By early only hyphen-holes were used by the Bureau.
I chose blocks to illustrate the difference between roulette and hyphen-hole. Single stamps make it sometimes difficult at first glance to detect the difference between hyphen hole and roulette. Formally, hyphen-hole stamps on this issue are labeled as HH 7 since there are 7 holes per inch. Rouletting in R 5. The 2 cent documentaries did have stamps that were issued without any rouletting, at least as partial roulettes.
Yet, of the almost 600 million the federal government spends on AIDS prevention, probably less than 10 is spent on high-risk groups. Jake reeled in pain, as the knife severed his spinal cord.
had sex with someone whose face you never saw. Yet the same year, the nation's public health officials embarked on a deliberate public-relations campaign to mislead the American people into thinking that AIDS was spreading inexorably into the mainstream. I do not like to be all alone at ho Good night. Why, after so much time and money, are so many still dying. In reality, the government's own research showed that the risk of getting AIDS from one act of heterosexual intercourse was less than the chance of getting hit by lightening.
What are and How to Perforations 01 December In the beginning there were stamps, and these stamps were imperforate and had to be cut apart with scissors. They were not then called imperforate; they were just called stamps.
Soon someone thought of perforations; and low and behold, they were now easy to separate. But there was found to be no gum and Perforations are there to make separating the stamps easy. The more holes per inch, the easier the stamps separate.
The result of these two somewhat conflicting requirements is the reason that some issues have many different perforations. The POs in many countries experimented with many different gauges number of holes per inch until they found ones that worked with the types of paper they were using to print stamps on.
Perforations are one way we, as collectors, classify different issues of the same stamp. Measuring perforations are one of the easier things to deal with when learning to collect.
Perforations come in three basic types. There is the classic perforation where paper has been removed creating a line of holes to ease the separation of the stamps. The roulette is a form of perforation where no paper has been removed just a line of little cuts. The last form of perforation is the pin-hole or sewing-machine perforation here again, no paper has been removed. Most perforations are of the classic, round-hole variety with paper removed. There is one form of perforation where the holes are rectanglar and paper is removed.
This shows that the expected return is independent of the choice of bet. Called or call bets or announced bets[ edit ] Traditional roulette wheel sectors Although most often named "call bets" technically these bets are more accurately referred to as "announced bets".
The legal distinction between a "call bet" and an "announced bet" is that a "call bet" is a bet called by the player without him placing any money on the table to cover the cost of the bet. In many jurisdictions most notably the United Kingdom this is considered gambling on credit and is illegal in some jurisdictions around the world. An "announced bet" is a bet called by the player for which he immediately places enough money to cover the amount of the bet on the table, prior to the outcome of the spin or hand in progress being known.
There are different number series in roulette that have special names attached to them. Most commonly these bets are known as "the French bets" and each covers a section of the wheel.
For the sake of accuracy, zero spiel although explained below is not a French bet, it is more accurately "the German bet". Players at a table may bet a set amount per series or multiples of that amount.
The series are based on the way certain numbers lie next to each other on the roulette wheel. Not all casinos offer these bets, and some may offer additional bets or variations on these. The series is on a single zero wheel. Nine chips or multiples thereof are bet. Two chips are placed on the trio; one on the split; one on ; one on ; one on ; two on the corner; and one on All numbers in the zero game are included in the voisins, but are placed differently.