Size: 3cm./1.1inch.
Weight: 4gr./0.1oz.

Pin made in the Soviet Union with the Tsar Bell and the Tsar Cannon.
The Tsar Bell is the biggest bell ever made but It has never been in working order, suspended, or rung. It weighs 201,924 kilograms (445,166 lb.), with a height of 6.14 metres (20.1 ft.) and diameter of 6.6 metres (22 ft.), and thickness of up to 61 centimetres (24 inch.).
When the bell was made, a major fire broke out at the Kremlin in May 1737. Guards threw cold water on it, causing eleven cracks, and a huge 10,432.6 kilograms (23,000 lb) slab to break off. The fire burned through the wooden supports, and the damaged bell fell back into its casting pit. The Tsar Bell remained in its pit for almost a century. Unsuccessful attempts to raise it were made in 1792 and 1819.
Napoleon Bonaparte, during his occupation of Moscow in 1812, considered removing it as a trophy to France, but was unable to do so, due to its size and weight. It was finally successfully raised in the summer of 1836 by the French architect Auguste de Montferrand and placed on a stone pedestal. The broken slab alone is nearly three times larger than the world's largest bell hung for full circle ringing, the tenor bell at Liverpool Cathedral.
The Tsar Cannon is a large early modern period artillery piece (known as a bombarda in Russian) on display on the grounds of the Moscow Kremlin. It is a monument of Russian artillery casting art, cast in bronze in 1586 in Moscow, by the Russian master bronze caster Andrey Chokhov.
Mostly of symbolic impact, it was never used in a war. However, the cannon bears traces of at least one firing. It is the largest bombard by caliber in the world, and it is a major tourist attraction in the ensemble of the Moscow Kremlin.