Vernon Austin makes nice grips to fit 1701s; albeit not necessarily promoted, consequently not obviously (use Google button here). Here are some of his finger-groove gips... after I removed the finger grooves and applied my preferred (satin-lustre) finish-
And here is a set of his Crosman 600 grips, unmodified.
You have a seriously awesome pistol collection! I second the Vernon grips! He posts on Brad's AA Classifieds from time to time, great quality grips!
Coincidentally I just got another set of "NLA" Steve Corcoran WWO Crosman Benjamin grips (Purchased "pre-owned" for $49 but looks brand new) and they are first rate but I have to install them someday to replace the unfinished walnut Ebay grips from Alchemy Air Works- needfulthings-2019 ($29.88+$3 shipping) which are also great BTW just need to final sand and stain and add your minwax or truoil coats to your liking. Kinda bummed because I cost $69 for the same SC WWO Crosman Benjamin grips used in the same like new condition from the same vendor 2 months ago... and I think I paid $99 about a year or so ago for the same grips...
Vernon's are ready to go, no need for refinishing...
HA
