Best left to a good gunsmith.
50's or so
This would be very difficult as the Springfield Model 15 .22 caliber rifle is already an antique. Try the Burris 3 - 9 x 40 scope and hopefully there will be enough room for the holes to mount.
There are numberous ones. The only limitation is your bank account.
the rifle has a dovetail mount for a scope built into the design.
Yes it has an 11mm Dovetail scope mount
25-100 usd
Almost any air rifle scope will fit a Daisy. Check Walmart or a sporting goods store for a Daisy scope. But any air rifle scope should fit the dovetail mount that is on the rifle.
If it has a scope rail or grooves for a scope mount then yes it will support a scope but you may need a scope stop to keep it from moving.
I am not familiar with this particular model (427) but I am familiar with Benjamin air rifle. If your problem is that there is on Scope rail to mount your scope then I know how to fix it. Crosman airguns owns Benjamin air guns. Crosman offers a special Benjamin barrel clamp that lets you mount a scope to it. See the link below
Best left to a gunsmith
One can be made
You have a Grade I Browning takedown semiauto .22 rifle made in Japan in 1986. Browning offers a scope mount for that rifle, their item #12333. Aftermarket mounts are available from Leupold, Burris, etc.