There's no year indication tag to it to confirm if it is game issued but I find it unlikely they would have went to that extent for a one day event while also not having manufactured any for fan shops & public sales. Who knows.
![Atlee Hammaker Jersey - San Francisco Giants 1989 Away Vintage MLB Baseball Jersey](https://i.etsystatic.com/15322960/r/il/187eaa/4911294205/il_fullxfull.4911294205_h639.jpg)
Jrami618 Mike Aldrette SF Giants Rawlings Authentic Game Jersey 1998 AT&T Skill Challenge
![Atlee Hammaker Jersey - San Francisco Giants 1989 Away Vintage MLB Baseball Jersey](https://i.etsystatic.com/29866535/r/il/bd6624/4357015411/il_570xN.4357015411_9o4t.jpg)
1989 san francisco giants - Gem
![Atlee Hammaker Jersey - San Francisco Giants 1989 Away Vintage MLB Baseball Jersey](https://img.mlbstatic.com/mlb-images/image/private/t_16x9/t_w1024/mlb/xvqop3siqgaulety4okd)
Blockbuster MLB deals that almost happened
![Atlee Hammaker Jersey - San Francisco Giants 1989 Away Vintage MLB Baseball Jersey](https://library.sportingnews.com/styles/crop_style_16_9_mobile_2x/s3/2021-08/bonds-hunter-2002-getty-ftr-071016jpg_8kx8s10gpi2j1n5pi21jijf98.jpg?itok=kqEyZCw-)
WATCH: Highlights from every MLB All-Star Game since 1970
![Atlee Hammaker Jersey - San Francisco Giants 1989 Away Vintage MLB Baseball Jersey](https://cdn2.mavin.io/production/soldItems/137594864/images/image-0.jpg)
Atlee Hammaker Topps Giants Values - MAVIN
![Atlee Hammaker Jersey - San Francisco Giants 1989 Away Vintage MLB Baseball Jersey](https://cdn1.mavin.io/production/soldItems/255286163/images/image-0.jpg)
Atlee Hammaker Topps Giants Values - MAVIN
![Atlee Hammaker Jersey - San Francisco Giants 1989 Away Vintage MLB Baseball Jersey](https://img.mlbstatic.com/mlb-images/image/private/t_16x9/t_w1024/mlb/jhroy4vf4dxfs3jd5lnv)
Fred Lynn's top moments
![Atlee Hammaker Jersey - San Francisco Giants 1989 Away Vintage MLB Baseball Jersey](https://upload.wikimedia.org/wikipedia/en/thumb/b/b6/MLB-NLW-SF-Uniforms.png/275px-MLB-NLW-SF-Uniforms.png)
San Francisco Giants - Wikipedia
There's no year indication tag to it to confirm if it is game issued but I find it unlikely they would have went to that extent for a one day event while also not having manufactured any for fan shops & public sales. Who knows.
![Atlee Hammaker Jersey - San Francisco Giants 1989 Away Vintage MLB Baseball Jersey](https://i.etsystatic.com/15322960/r/il/13d96e/4911294455/il_570xN.4911294455_jo5v.jpg)
Jrami618 Mike Aldrette SF Giants Rawlings Authentic Game Jersey 1998 AT&T Skill Challenge
![Atlee Hammaker Jersey - San Francisco Giants 1989 Away Vintage MLB Baseball Jersey](https://i.ebayimg.com/images/g/OIoAAOSwo2digD-e/s-l500.jpg)
1989 san Francisco giants shirt, san Francisco giants… - Gem
![Atlee Hammaker Jersey - San Francisco Giants 1989 Away Vintage MLB Baseball Jersey](https://img.gem.app/720215479/1t/1693988039/nutmeg-vtg-1989-san-francisco-giants-mlb-will.jpg)
1989 san francisco giants - Gem
![Atlee Hammaker Jersey - San Francisco Giants 1989 Away Vintage MLB Baseball Jersey](https://www.sanfranciscofanshop.com/images/Atlee_Hammaker_Mens_San_Francisco_Giants_Snake_Skin_City_Jersey_Black_Authentic-800-7903.jpg)
Atlee Hammaker Jersey, Authentic Giants Atlee Hammaker Jerseys
![Atlee Hammaker Jersey - San Francisco Giants 1989 Away Vintage MLB Baseball Jersey](https://i.ebayimg.com/images/g/Kh8AAOSwVgNk3Dra/s-l500.jpg)
1989 san francisco giants - Gem
![Atlee Hammaker Jersey - San Francisco Giants 1989 Away Vintage MLB Baseball Jersey](https://i.ebayimg.com/images/g/4EEAAOSwCJVkr~p4/s-l1600.jpg)
1989 san Francisco giants shirt, san Francisco giants… - Gem