This is an sls 3000 safe, difficult to identify whilst shut as all the markings are on the bolts! I had the pleasure of the company of the original owner of SLS safes with me to explain the code system used. Roger is a fascinating man, what he doesn’t know about safes, their construction and the industry is not worth knowing. The last SLS safe I had to open I must admit I cursed Roger as it was an exceptionally hard safe to drill, took 2 days and lots of drill bits to sort out. A very worthy opponent!