Yes, It looks like a Sony. If you pull the head unit out of the dash, there should be a sticker on the top of the main chassis with the manufacturer and model number. But without the faceplate there's no way to determine if the head unit actually works or not.
If it is a Sony head unit, you can purchase the the Sony head unit removal tools on eBay for a few dollars. They slide into narrow slots slightly above the middle of each side of the main chassis. When you push in the removal tools, they release the spring locking tabs which will allow the chassis to slide out of the mounting cage/sleeve.
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If you can get the model # off of the chassis, your best bet to find a faceplate would be eBay or
www.pacparts.com
But again, if you spend the money on a new face plate, there's no guarantee that the head unit will still work, so it's a bit of a gamble.
And even if it is good, it will obviously be an older model and you would probably be better off upgrading to a new unit that has modern features such as Bluetooth hands free calling and USB input, etc.
Several of the new 10.1" floating display touchscreen head units will mount into a single-DIN opening.