Silver Modernist brooch/pin. Vintage 60s/70s retro jewellery hallmarked 'Silver'. Sterling 925? Curved/layered textured, MCM Brutalist style

A beautiful vintage Modernist style brooch/pin. Circa 1960s or 1970s.
It is stamped 'Silver' on the back so uncertain of the exact percentage silver, likely to be foreign, ie Mexican/Indian silver.
The pin is stamped 'metal'.

It's Modernist in style, but with two curved faces of Brutalist style textures and small brick like random patterns.
There's a series of pretty loops, curves, wires, in varying widths - all beautifully formed, linked together and balanced.

Petite and slim, quite possibly unique and handmade. Perfect gift idea!
37x35mm. Weighs 5g.
Great vintage condition.

Price includes P&P to the UK.