The earliest bars that haro produced where Taiwan made(84/85) and came with a chromoly 4130 decal on which was placed on the front / rh side of the bar if i remember correct ,they had no stamp and i've only seen them in chrome .
They were similar to the ones you have , but to be honest looked slightly different at the curve from the stem , the only person i can think of who has these bars is MOOSE , he might be able to compare his . pm him. After that there were kneesavers and they were out in 85.
As for the decal you have ,it is early 82/83 and doesn't fit with the bars , Those white decals were everywhere BITD and may have been applied later.
I seen those bars on a link from this site on ebay i think , can you still contact the seller and ask him about there history as i'm sure he mentioned it ?
If you want a chromoly 4130 decal , i can send one to you , just pm me your address, as i think that is the wrong one you have ,and get in touch with philip (moose)on the bars ,as he has some on his sport.
Other than that i don't know of haro bars made in that shape with that Decal , sorry.
jay