Singapore 2013 Year of Serpent / Snake

The Singapore Post issued on 4 January 2013 the Year of Serpent stamps with the current 3-stamp zodiac format, with the denominations of 1st local, 65-cent and $1.10. As usual, the 1st local was also issued in a self-adhesive format sheetlets of 10 stamps; and a collector's sheet comprising 2 stamps with denominations of $5 and $10, sold at post office for $16.80.
All the 3 stamps are illustrated with stylised snakes, emblazoned with auspicious chinese characters. The character in the 1st local stamp is 幅 pronounced as fu, that means wealth, in the 65-cent stamp the character is 瑞 pronounced as rui, that means great auspice. The $1.10 stamp has 4 characters 福满乾坤 pronounced as fu man qian kun (han yu pin yin), that can be translated as wealth-filled universe.

The stamps are issued in sheetlets of 10 stamps, and the selvage of the top plate blocks carries another set of 4 chinese characters 金蛇呈祥 pronounced as jin she cheng xiang, that can be translated as the golden snake bringing fortune.

The collector's sheet is printed with offset printing incorporating metallic ink and UV varnish. The stamps contain hidden images which are revealed through a plastic fresnel effect lens, that comes with the collector's sheet. The hidden image in the $10 is easily revealed as a horse, the zodiac animal that symbolizes the following year of 2014; the image in the $5 should be a dragon representing the previous year of 2012, but this image is not easily seen.

2011 Year of Rabbit

The first stamp issue for 2011 rightly gives us the Year of Rabbit stamps. The set follows the general design theme for this 2nd cycle of the Chinese Zodiac, with 3 stamps - 1st Local NVI, 65c and $1.10. However, the collector's sheet is slightly different from the previously 3 for the Years of Rat, Ox & Tiger. The collector's sheets for those 3 years contain real holographic transitions of the animals of preceding, current and following years, for 2011, the collector's sheet is coated with a UV sensitive layer, which supposedly brings out the tiger in the $5-stamp and the dragon in the $10.00 stamp.

Singapore 2010 Year of Tiger

For the Year of the Tiger, the Singapore Post issued on 8 January 2010, a set of 3 stamps and a collector's sheet. The stamps were for 1st local, 65 cents for Asian destination (Japan excluded), and $1.10 for Japan and the rest of the world.
The collector's sheet contains 2 stamps, with face values of $5.00 and $10.00, but it is sold at the post office for $16.80. These stamps are printed with transparent holograms, the hologram on the $5.00-stamp shows the morphing of an ox into a tiger - alluding to the transition from the Year of the Ox to the Year of the Tiger, while the hologram on the $10.00-stamp shows the morphing of a tiger into a rabbit, for the transition of the current Year of Tiger to the following Year of the Rabbit.
This is the third such collector's sheet issued by the Singapore Post, the first two issued in the last two years, starting with the Year of the Rat, and then the Year of the Ox. On the top left corner of the sheet are two ancient Chinese characters representing the word for "tiger".
The holograms on the stamps show up as shadows in my scan of the sheet.