Barbara Walters -- Offered Serious Dil-Dough for Black Vibrator

Barbara Walters just got a letter ... not from her buddy Obama, not from Hillary Clinton ... from a company that wants her to be the front person for a line of super-slow running black dildos.

Barbara's comment this week on "The View" -- that she still uses a vibrator at age 84 -- caught the eye of a company called Phallix.

Phallix sent

-- obtained by TMZ -- to the ABC offices in NYC, touting it's latest creation .. the "Babs" line -- a self-pleasuring device made of special, smooth glass developed by NASA eggheads.

This ain't your grandma's vibrator. Well, actually it is. It's designed to go especially slow, for the 60 and over crowd.

Phallix is looking to partner with Walters for a product that will please even the fussiest old biddy.

We're guessing Babs will pass. She just said she was kidding about the whole vibrator thing. Too bad ... it could make her one of the 10 Most Fascinating People ... for sure.