Gloucestershire Police have released CCTV images as part of an investigation into the theft of more than £22,500 worth of rings from a Cheltenham jewellers.
Police said two men entered a jewellery store in the Montpellier area before 22 rings were stolen.
The theft happened on 20 April, but investigators issued a renewed public appeal on 11 August after previous enquiries failed to identify the two men officers want to speak to.
The stolen jewellery has also not yet been recovered.
Police are asking people to contact them if they recognise either of the men shown in the CCTV images or if they have been offered any of the stolen rings for sale.
Anyone with information can contact Gloucestershire Constabulary through its online reporting service, quoting occurrence 53260026538.