Re: Sirius Symboli and Prix Sea Sick (OP)
While combing through the racehorse Mogami's progeny I had to look at his sire Sirius Symboli's racing form over on Wikipedia, which lists these races for his 1986 European campaign:
Processing img 3468bo6e75kh1...
I bring your attention to a May 6, 1986 2000-meter Open-level race named "Prix Sea Sick" (シーシック賞), held at Saint-Cloud racecourse, where ridden by Éric Legrix (who had previously ridden him for the Prix du Prince d'Orange on September 15 the previous year), he finished third behind a horse named Tilt.
Notice the lack of attribution. It being assigned an Open-level designation, despite the fact that even in 1986, the lowest level of Group designations available for French horse races was Listed. Group 1, Group 2, Group 3, Listed.
That would've been fine, if I had been able to track down what this "Prix Sea Sick" was. Who "the racehorse Tilt" was. If any races over 2000 meters of soft ground had been held on May 6, 1986. If I could find any other horses who participated on the same race that day. Even just another detailed list of the participants, conditions, and other relevant information on the same race held before or after 1986.
No luck.
Since there was no attribution I could find on English Wikipedia, I checked Japanese Wikipedia, despite my lacking working knowledge of Nihongo. All I could find was this:
Processing img 4mtm29a9c5kh1...
Same lack of attribution, but this time the race was held at Longchamp instead of at Saint-Cloud. Nothing I could find online.
Let's try Japanese netkeiba, surely it's more comprehensive!
Processing img w0qzpnxke5kh1...
That's fine, let's click "Past Seasmic Awards"! (Oh, machine translation.)
Processing img pfqqzmzle5kh1...
Check JBIS!... which only lists down the six most recent races Sirius Symboli was a part of. Hahahahaha.
Dammit, keibalab!
Processing img 57shvovij5kh1...
... ahonoora!!!
Processing img fnw9v0stj5kh1...
Perhaps if I check for any information on the origins of the race, who it was named after, when it was first held... no, nothing. Pedigree Query turns up four horses, one of whom a user apparently forgot to add the details, the others British or American, and the last a French horse who apparently was foaled in 1905 and competed in two important races, the end.
Perhaps if I check for the race record or stallion record of the apparent Prix Sea Sick winner Tilt... no, haha, of course not. Nearest damn thing I could find was apparently a participant in the July 1986 Grand Prix de Lyon, but nothing at all to indicate that he participated in a horse race earlier that year.
Sigh.
I guess I'll have to write France Galop anyway (request for further information on this Prix Sea Sick, request for a detailed breakdown of all races in France Sirius Symboli was a part of [participants, prize money, finish times, jockeys and trainers, so on and so forth], request to have their answer be used as future reference material, etc), but perhaps there's anyone here on this sub who can supply even anecdotal information not derived from Japanese sources?