Keep in mind, though that beauty may look old, it may not be.
I had one like that about 40 years ago. A fifty if memory serves.
It was from a kit. A damn good one.
SIDE NOTE: I have one hell of a 1.800 square foot play area (heated and cooled shop) and did some refining of the rifle, but it was impressive even before I did that.
Back in the 80's, one like this could be picked up for around $150.00 to $300.00, depending.
Any way you go, it's a solid keeper [and I'd have it ready to rock and roll by keeping necessary supplies dry and ready].