As reflected in the photo on that url, that officer with a "silver" pip and a crest is probably from the SPF, which means he is a DSP (Deputy Superintendent of Police).
As we scroll down, there is a SAF officer with three bars, which means he is a Captain. It looks like he has served for at least ten years, as reflected by the two conduct medals. During my days (late 1970's), some of us were commissioned after 9.5 months, whereas for those of us who went through BMT, School of Infantry Section Leaders (as it was then known), then posted to a battalion, return to OCS in SAFTI, we were commissioned after about 16 months of NS (to serve another 14 months before ROD or ORD). Some of us were promoted to LTA (Lieutenant, and we had 2 pips in the old days, not 2 bars) after 24 months, and almost all after 28 months. If one signs on as a regular, and as a non SAFOS, it is very likely that he will be promoted to Captain after about 5 to 6 years in service. I believe that a SAFOS will be promoted to Captain, within one to two years of graduation from university, if not sooner. There are very very few SAFOS who were not promoted to CPT within 5 years, and the SAFOS were on a different pay scale compared to us NSF or non SAFOS officers.