The Mac 512Ke shipped in platinum with the full size Plus keyboard according to my notes. Now I may be confusing it with the 512K/800 (another name for the 512Ke in Europe) but Eric Rasmussen agrees: http://homepage.mac.com/chinesemac/earlymacs/#Plus_hardware
As for other rare compacts, try the Japanese versions. From my notes:
The Canon DynaMac
The first Japanese language Macintosh was marketed by Canon, Apple's distributors in Japan at the time. It was based on the Mac 512K and was fitted with a Japanese language board which stored special fonts in ROM. No hard disk was required. Custom software called EgBridge allowed Japanese language to be used in standard Mac applications such as Multiplan and MacPaint. A dedicated word processor called Advanced EgWord was also produced. The entire bundle was sold as the DynaMac (not to be confused with the US Dynamac portable Macs) and upgrades for the Mac 128K were available via Canon and Apple Japan.
The language adapter board was manufactured by Abit, now a popular manufacturer of PC products. The custom software was produced by a company called ErgoSoft. DynaMacs sold by Canon had a badge on the front case, but this may not be true for 128K and 512K Macs fitted with an upgrade.
As for other rare compacts, try the Japanese versions. From my notes:
The Canon DynaMac
The first Japanese language Macintosh was marketed by Canon, Apple's distributors in Japan at the time. It was based on the Mac 512K and was fitted with a Japanese language board which stored special fonts in ROM. No hard disk was required. Custom software called EgBridge allowed Japanese language to be used in standard Mac applications such as Multiplan and MacPaint. A dedicated word processor called Advanced EgWord was also produced. The entire bundle was sold as the DynaMac (not to be confused with the US Dynamac portable Macs) and upgrades for the Mac 128K were available via Canon and Apple Japan.
The language adapter board was manufactured by Abit, now a popular manufacturer of PC products. The custom software was produced by a company called ErgoSoft. DynaMacs sold by Canon had a badge on the front case, but this may not be true for 128K and 512K Macs fitted with an upgrade.