It's both--a high quality rifle and a gimmick.
There's nothing wrong with Henry rifles--on the contrary, they have a great reputation. It's a quality rifle. This series of Henry rifles are known as "Big Boy Lever Action" rifles.
The same rifle without the engraving can be bought for
Here's one chambered in 45 Long Colt. It is new and sells for $675.
Here's one chambered in 44 Mag (like the one in the OP), but without the engraving, new, for $669.
If the idea of the engraved model appeals to you, you might contact a Henry dealer and see what the actual price is (as compared to the MSRP as shown in the ad). It is unlikely to appreciate much.
In my >personal< opinion, if I wanted a memento of the oil biz, I'd think something related to the biz itself (e.g. an old drill bit of some type no longer used, mounted and in a nice display box, or some of the tools of the trade you used when you started) would be pretty cool. My dad was a mechanical engineer, the drafting tools, slide rules, pipe templates, early model TI engineering calculator, and other things he used every day and which he left me mean more to me than memento he could have purchased.
