It’s funny that you posted that – I’ve thought for some time that I’ve never seen a simple mahogany/spruce model F – just about every other wood combo imaginable, Eir, braz, koa, walnut, maple, sycamore – all with spruce – even maple/cedar, koa/koa, and mahogany/mahogany, but never mahogany/spruce – I’m sure they’ve made a few, but other than that picture, I’ve not seen one anywhere –
hopefully they made at least one with a 1-13/16” nut – and hopefully, someday, someone, will put it up for sale! – 😀