Starting with the first luxury studio portraits of the 1840s and ending with casual snapshots of the 1950s, each issue covers a few decades and explains the main features to look out for, including identifying the photographic format, dating the card mount, investigating the photography studio and dating the pictorial details, especially the fashion clues.

Male Pattern Baldness affects 25% of men by the time they are 30, and by age 60 around two thirds of men will be affected.

But the prevalence of this hereditary condition does not reduce the self-esteem issue of thinning hair for many men.

As well as the process, you can also tell a lot from a photograph’s size or ‘format’.

Most processes and formats were only popular for a limited time, so if you can identify these you will also have a rough idea of the photograph’s date.

Frustratingly, old family photographs often come without any accompanying documentation so it can be very difficult to identify their age.

Old photographs are full of clues that can help you to do this, such as clothes or hairstyles, and we have a list of useful contacts and resources that may be able to help you date your photographs by fashion.

David Wheeler, creator of start-up dating site Settle For Love, believes honesty is the best policy and encourages online daters to disclose hair loss.

He says, “” If you’re starting to see signs of a receding hairline, or perhaps a thinning crown, but are not ready to embrace balding just yet, contact a hair loss specialist for a diagnosis and more information about the best treatments for your condition.

Dating historic images captured primarily with digital photography. So, what can you do with an old photograph and no date?