I've seen the Spartan in plastic cases, they are often cracked. Model 99 is much more common here, and I don't think there is any reason to go for a Spartan unless a very nice example happen to turn up. If I'm correct, the Spartan is the later version 99 with back tack lever stripped of all extras that were standard on the 99. A spartan can have been fitted with lights and better case later on, but personally I would prefer a 99 in a domed wooden case, or the suite case type. Here they sometimes turn up on a table, they are nice too.