1971 BILLY JACK MOVIE POSTER w/'RECOMMENDED AS ADULT ENTERTAINMENT' STAMPED/PRINTED ACROSS CENTER?

Growing up in the late 70's & early 80's my dad at one point or another owned every theatre in Miami Beach except the Byron/Carlyle (which belonged to Wometco & were never for sale). I've done everything from cashier to concession to projectionist (after a movie's run I just to break the films down for shipping and send them back to the distributor - and the movie posters I just threw away!! (I know; if we only knew then what we know now) Unbelievable right?) - So I do know something about movie posters.
The poster shown here has me confused; the small print on bottom is correct, but I can't find another with a 'RECOMMENDED AS ADULT ENTERTAINMENT' ON IT.

AND(!) near the bottom where the regular rating i, not only is it scratched/marked out - but the original rating that was there is wrong! It should be PG (Parental Guidance suggested) but this poster has GP??

Is this a authentic movie poster or a reproduction? If real could it be a error poster that didn't (or shouldn't have) go out? I found it at a thrift store today (along with a full size Halloween & a The Texas Chainsaw Massacre posters) - so maybe it was donated by someone in the business or a relative of someone in the business who passed away & they donated their posters they didn't want?

Thanks for any help!
PS - It measures 14" x 36" - it would be called a quarter (1/4) sheet (a full size poster is called a one sheet)

Thanks again!

 

https://en.wikipedia.org/wiki/Motio...P: All ages admitted,No one under 17 admitted.

 

The below quote is from a discussion about another movie:

"The PG-rated 1972 movie (recommended as adult entertainment in some theater chains) received mixed reviews"

So neither of those seem odd.

 

I remember the GP rating and looks like the date was right for this movie (which I saw).

https://en.wikipedia.org/wiki/Motion_Picture_Association_film_rating_system#From_M_to_GP_to_PG

The ratings used from 1970 to 1972 were:

• Rated G: All ages admitted – General audiences.
• Rated GP: All ages admitted – Parental guidance suggested. [Sometimes a disclaimer would say "This film contains material which may not be suitable for pre-teenagers"]
• Rated R: Restricted – Under 17 requires accompanying parent or adult guardian.
• Rated X: No one under 17 admitted.

 

the size you describe is that of an "insert". THey are usually a few inches short of standard height and about half the width Here are some like yours:

https://movieposters.ha.com/c/searc...illy+jack+insert&ic4=KeywordSearch-A-K-071316

you can blow up the pics to show the details and compare to yours. Yours is probably original. Also you can sign up for free and it will show you the auction price that it fetched there.

 

1070 - 1972 I was 10 - 12; I never heard of GP rating (funny since I ended up in theatre business from about 15 or 16 rill my 20's) - learn something new everyday! Thanks
Was the Adult Recommendation added by theatre chain or studio?
Thanks all

 

Thanks Sunday Silence, I will.

 

I remember thinking it was stupid to change from GP to PG. Don't know the answer to the other.