Hello Rob,
Sounds like you have a complete selection of all various steel rims used on the W113s. The rims with the pins are the most difficult to find since they were only used on the 230SL #113 400 00 06. The rim with the pressed shape are the next version and will accept either the full wheel covers or the two piece. These can be found on the early W108 sedans of the era and should be more easily found, look for this number #108 400 00 02. The 250S, SE and the early 280S, SE sedans should have these.
Joe Alexander
Blacklick, Ohio