Unusual ZX Spectrum 48k motherboard

Today I am restoring this unusual yellow motherboard with blue silkscreen issue 4A Sinclair ZX Spectrum 48k. After the capacitors are replaced, a new(ish) keyboard and faceplate, and a wash and wax, this machine will be auctioned for charity! Come and take part in the fundraising on the 16th of September. The link to the fundraising page is below. Just Giving Page for The Befriending Scheme https://www.justgiving.com/page/morefunmakingit SECOND CHANNEL! https://www.youtube.com/@MoreFunMakingIt2 More Fun Website https://www.morefunmakingit.co.uk/ My Twitterings can be found here https://twitter.com/morefunmakingit Facebook https://www.facebook.com/MoreFunMakingIt Mastedon https://oldbytes.space/@MoreFunMakingIt BlueSky https://bsky.app/profile/morefunmakingit.bsky.social