From the 50`s and later it is still considered fairly modern !! That would fit the time frame !! Glass mfrs made their items for several years !! Thats why glass, unless marked, is difficult to date accurately !! Many mfrs were making items with what everyone called “Love Birds” on them !! They were popular as wedding gifts !! Your set is machine made, Not sure about the hand painted unless it is written somewhere !! But still its a nice set and something you should have for a keepsake !!