Unlike your black memovoxes these Snowdrops seem all correct...
(the good thing with rare references with a very specific case such as the E877 is that you can't counterfeit them using a less desirable Watch like it is possible to do on the fairly common E855 by repainting a dial).
Nice to see the 8 together, showing most of the variants in the series. These are certainly rare, in particular the gold one