Here are some iPhone photos of the 1903 assuming the links work. I have no idea how to post the actual photos.

https://photos.app.goo.gl/yYHV9hvsGqLCnfpZA
https://photos.app.goo.gl/CREnTB3PeBVa2F7f8
https://photos.app.goo.gl/UYqugZQcKtmE8eFW7
https://photos.app.goo.gl/wiqWeEX1ZMERVY897
https://photos.app.goo.gl/JiWHr5Qmw5MVjNe18
https://photos.app.goo.gl/KhUp87n9THiFUZv16
https://photos.app.goo.gl/sry3x6NYz3dvDNRE7
https://photos.app.goo.gl/qAegBrbteURXDiGf8
https://photos.app.goo.gl/5D9g8mJvsvYxxH2u6

The rifle seems to me to be a rework of an NRA 1903 sporter, based on the rear sling swivel base and the way it is attached. I don't know that it's the work of G&H, but the sidemount base, barrel band, front sight ramp and hood, forend cap, pistol grip cap, etc. are typical G&H features and the rifle looks very similar to photos in Michael Petrov's book. The folding leaf sights are not necessarily G&H. Also, I don't recall seeing a G&H with forend checkering that doesn't wrap all the way around.

Would love to hear any thoughts on this rifle.