16 Vintage My goodiness,My Guinness Art Advertising Double Card

I got this set of cards out of a storage I brought about 2 years ago.I think they are vintage.I've google this lot of 16 but I can't find any like this set.They are card board artwork prints or litho.Double side,4 1/2"x3 1/2".I've seen a lot of examples and sales but I have no idea the age or what they were used for.I check coasters,placemats,too light for place mats or coasters liquid would come right through .Any idea what I can google to find some information.

 

I see a lot used for newer metal signs..
guinness beer cards

 

It's not tin,card board.I haven't seen any item like the one I got.Just need to find a site to maybe look items up.What are they and how old.

 

ya...I know yours are not tin !!!!!!!!
here's a greeting card..
I'm saying these images are widely used..

 

Thanks! I'm still looking

 

Could it be something like these? Maybe a reproduction of vintage graphics? The seller has measurements in the photos.

https://www.ebay.com/itm/224773594414?chn=ps&_trkparms=ispr=1&amdata=enc:1GX6S_IZKT9OfWQWCpQmSaA59&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&mkscid=101&itemid=224773594414&targetid=1583904486362&device=c&mktype=&googleloc=9028818&poi=&campaignid=15275224983&mkgroupid=131097072938&rlsatarget=pla-1583904486362&abcId=9300697&merchantid=426121707&gclid=Cj0KCQiA7bucBhCeARIsAIOwr--gU7TWUZcacmS7QNhpBd3rk8BFbHN657Q4lSAq00o_tqDfbZeZ3icaAs96EALw_wcB

 

Guinness are still going, they will keep making merchandise like this to help promotion. At least you have helped them a little by buying these and sharing pictures online, money well spent they would say.

 

https://www.amazon.ca/Guinness-Heritage-20-Pk-Coasters/dp/B003YUHUII

litho ?????