Mystery metal spacers / shims

[Archie's mid life crisis 0]

Hi,

I've started building up my 89 1.6 Gti after completely disassembling it. I had the original bolts, metalwork etc. sent away to be yellow zinc passivated. I have got the length of reinstalling the engine and have come across 4 spacers / shims in my box of parts - see photo. I can't remember where they came from. They appear to match the spacing of the alternator mount to block bolt holes but i'm pretty sure they weren't there when i disassembled the car. In any event if i do put them there the alternator mount doesn't sit properly. Can anyone shed any light on where they go?

[Leslie green 110]

I cant remember anything like that when I got my parts plated ,maybe its of 1.6 rear brakes (i have disc rear brakes on my 1.9)

Edited January 31, 2023 by Leslie green