Miners' lamps are collectable for anyone who collects mining artifacts and, as such, are valuable to some. While many people use mining lamps for camping lights, most people collect them and keep them without using them. For that reason, a lamp does not have to be in good working condition to sell, but the better the condition, the more valuable the lamp. Determining the value of a miner's lamp can be difficult without a guide, but age, brand, and condition are good places to start.
When valuing a miner's lamp, age is one of the most important considerations. The older the miner's lamp, the more valuable it is. Lamps less than 30 years old are likely not very valuable. Vintage lamps and antique lamps (50 to 75 years or older) are considerably more valuable. Some miner's lamps have the date of production stamped on the front, but many of them do not, which makes ageing them more difficult. However, if you know the original purchase date of the lamp, this helps with the evaluation.
Most miners' lamps feature brand stamps on the bottom or side. Some brands are more valuable than others, and you can look up the brand to compare it to the selling prices of other lamps from that brand. In some cases, certain brands use better quality materials, better designs, or have more desirability for one reason or another, which make them more valuable. Common brands like Eccles or Davy are worth less, while rare brands like Thomas Williams are worth more.
Condition is also a huge factor in assessing lamp value. Even a relatively rare lamp is not worth much if it is missing parts or has dents. Assess the damage to ensure all of the parts are there. If it is in very good condition with all of its parts and no dents, then it is a great deal more valuable than one that is missing parts.
The rarity of a miner's lamp can be difficult to determine without a guide, but you can do a basic search to see how many lamps of the same brand or type you find. The fewer lamps that come up, the rarer the lamp is. Obviously, rarity effects value, so the rarer it is, the more it is worth.
One of the best ways to find out what a miner's lamp is worth is to compare it with others that are up for sale. Comparing the prices and finding an average price for similar lamps from the same brand, or in the same condition, helps you with placing a value on the miner's lamp. Price comparison is not always possible, but it is one of the best ways to get a real idea of what the lamp is worth.