Does the above model show the conus at T12-l1 with the cauda equine below this level. Some of your models seem to show a solid cord down to the lumbosacral junction.
Per the manufacturer: The conus medullaris and cauda equina on this model split at L5/S1 rather than T12/L1. We are unaware of a model with nerves splitting off L1 due to breakage and tearing. Although, some manufacturers show a textured spinal cord to demonstrate that the cord has terminated.