I do not think that recruiters have any real knowledge of 486, I think it will only benefit you where evidence of OOAD skills are asked for, then you can say -- look IBM say I can do it

As with all (good) certifications, the pay-off is not in the sheet of paper in your hand, it is the knowledge in your mind.
Your ability to produce a qualification probably counts for little, your ability to discuss OOAD at interview is golden.
All other things eing equal, 486 will be an aid in job hunting, but more important is what you will learn en-route to certification.
James