MXR Phase 45 Script Logo 1975 s/n 508246 made in USA in excellent condition.
Thoroughly tested and in perfect working order.

A similar MXR Phase 45 was used by the legendary virtuoso guitarist Steve Jones of the Sex Pistols on the massive hit "Anarchy in the UK". 

Quoted from Ultimate Guitar :
" Steve Jones used an MXR Phase 45 on "Anarchy in the UK." In an interview with Ultimate Guitar, he said: "I only used one effect pedal and it was on Anarchy In The UK, it was a MXR Phase 45. That was the only thing I added on my end." He's always been a no-frills, simple rig guitar player, so his primary sound with the Sex Pistols was his white Les Paul through a cranked Fender Twin. Some websites mistakenly state that he used an MXR flanger, but he didn't use one, and the interview here shows he himself said he only used a Phase 45 & it was only on "Anarchy in the UK.""