Vintage OOAK possibly Faille silk Jacket blouse Art Deco buttons asymmetrical black gold likely 1930s or 1940s
 
This is something special though it has no labels, so I am judging on the style and features, and fabric. It appears to be a faille silk with a sheen in the light, and an amazing button front. It has a zig zag arrangement with art deco fabric covered large rolled design gold edge buttons, buttoning through flaps two in one direction one in the other. It also has a lovely vent/pleat in the centre of the peplum back as was big in fashion late 1930s and early 1940s. Has some looseness in the back before tightening right in at the waist and again this doesn't suggest 50s. 
 
It is a size UK 8. It is light in weight, and unlined , but no way is this hand made: more likely a model piece as often they were not lined or labelled like the ordered garments. either that or an expert dressmakers flight of fancy.
 
So nothing much else to go on, so it's down to a fashion gumshoes sleuth's instinct! The only jacket I have ever seen like this was a Schiaparelli, and it has somewhat of a similar feel. I bought a Schiaparelli hat from a lady in London but couldn't afford the jacket at the time. Her mother had worked for Bacardi Rum btw in Cuba pre revolution, very interesting. Was quite a fashion place during the 1930s, and also famous for its Art Deco. So if I am correct and this is a 1930s piece, that is the period that Art Moderne (Art Deco is an anachronistic term coined later) architecture was at its peak. Schiaparelli was influenced by Dali and surrealism and the arrangement of buttons on the front of this has a little such inspiration I would suggest. Faille silk was also popular in the 30s and declined in the 40s with advent of cellulose based synthetics like rayon.  Amazing to think this piece may have been made at the time of that Art Deco architecture etc and is still here. This excites me and I hope it does you too so forgive my musings as my interest is in the history of the garments and times, not just selling. So my Etsy is also my blog if you like and it heartens me I get a lot of messages from people who have learned about their own garments from my research dabbling.
 
That tailored waist peplum and pleat also supports my theory, as this feature was very big at the time as is evidenced in many of the Horst photographs of the time. See the video, which I've tried to cram into 15 seconds from 1m 30 secs by split screen and you can pause to read. I look at the life and times of the jacket if 1930s/40s and how t could be worn with a drapey period slinky fishtail skirt/dress, or a pencil skirt. Of course pencil skirts were also big in the later 40s and 50s, so it could be from then. Anyway it looks great with a pencil skirt esp in satin but also would loo nice velvet or silk. The 30s saw long pencil skirts and the later 40s and 50s shorter, but it looks good either. I've gone for one med length between the two for styling. I look at Art Deco architecture, movies, and detectives and gangsters of the time.
 
One of my fave London Deco buildings is the Hoover vacuum building in London. But speaking of Hoovers (I don't think this baby would have done much in that department, she's too much of a thirties vamp or forties femme fatale), I also muse about another Hoover: J Edgar. The founder of the FBI. Very much in the public consciousness of the time largely due to the James Cagney movie of 1935 "G-Men" one of the biggest grossing movies of the period. In my fantasy of the jacket, our girl ain't no angel however and may well have gone for the bad guys! As femme fatales do, and this def ain't no pretty white frock for a Hoover housewife! She's all about glamour.
 
Batman made his debut in 1939 in Detective comics, and was soon on his knees to Catwoman btw in the first actual Batman comic. 1943 saw the first serial screen debut...no Batmobile, he had Cadillac Series 75 Convertible Sedan but have a look at the 1938 Phantom Corsair for a car design to show the amazing designs of the 1930s....certainly likely an influence for the much later Batmobile. 
 
Anyway whether she is a 1930s 40s or 50s piece, she's a def femme fatale, would be well at home in a Film Noir,  and you need to have an appreciation of period dark glamour to slink around in this ... Doing right I don't think very much on her schedule! 'Why Don't You do Right?' released by Benny Goodman Orchestra and Peggy Lee in 1943....

So if you're a guy looking for s special piece for your lady..."why don't you do right...like some other men do....get out of here and get her some money too...."
1930s 40s or 50s aficionado this will suit them all....