Crimestoppers is offering a £3000 reward for information leading to the arrest and conviction of two men involved in a corrosive liquid attack in Witham earlier this year.
The incident, which left Wayne Ingold, 56, with severe injuries to his hands and face, took place at around 10.45am on August 8, as he collected his post from the communal area of a block of flats in Bramble Road.
The 56-year-old met with the sight of two men banging on the door and, after a brief exchange, they threw the corrosive liquid on him.
The assailants, who had a blue Vauxhall Signum or hatchback-style vehicle, were seen wandering around looking at property numbers before the incident happened, but it is believed the attack was a case of mistaken identity.
Crimestoppers is offering a reward of up to £3,000 for information that is passed to the charity's anonymous 0800 555 111 number leading to the arrest and conviction of the people responsible.
Ann Scott, Crimestoppers' Eastern Regional Manager, said: "This is a particularly nasty attack in broad daylight which has left an innocent member of the public with horrific injuries.
"You have nothing to fear by giving Crimestoppers information as we never ask for your name or take any personal details.
"We don't record our calls and can't trace calls/computers. Those giving information won't have to go onto to give a statement to police or go to court.
"You don't even have to speak to someone if you don't want to – you can give information online. It really is quick, safe and easy. And, it could be vital in helping police to bring those responsible to justice".
If you have any information on this attack then please contact Crimestoppers anonymously on 0800 555 111 or through the anonymous online form at www.crimestoppers-uk.org.