I'll see if I can get some photos later today.
Sadly, they've been stashed away since purchase -- we're doing some work on the house and the ultimate plan is to use them in the living room, but it will be a bit before it's ready. I have a smaller room I plan to set them up in in the interim, but that won't happen until spring I would think. I imagine I sound like a gear hoarder, but this is only the second pair I've seen offered for sale locally in the 5 or so years I've been looking, so I thought I'd better get them if I could. I have a Sansui CA-3000 / BA-3000 combo I plan to use with them.
Until recently I had been running my 1590s with a Nikko Alpha VI (300 WPC) which sounded glorious, but it roasted something internally and is down for maintenance. Its brother the Alpha III is taking its place currently. I imagine the 910s would also like a good deal of wattage.
I contacted Vintage Audio Repair, we'll see what they say. Thanks.