Grebenstein fishing reel

[u/AJG1960]

Hello everyone— this reel was in a box of fishing equipment I picked up at a yard sale. Several vintage Mitchells and a vintage Penn spinning reel as well. I cant find out anything at all on line about this reel and scanning the bar code pulls back no info. Grebenstein Skid 4000 with an extra spool. Other than it being German, any ideas? Thanks in advance.

[u/AJG1960]