You have a mix of possible 1921 Colt Era parts, WWII parts, and West Hurley parts. You will need to post more photos of some of the items for identification.
For cost estimates recommend you start with looking at posted commercial sites to see what they are asking for them (Links below). Also, I would not rule out "repros" since the front vertical grip has been copied for many years. Same with the Colt Era buffer assemblys. Not saying they aren't original, but you will need to post more photos of them. A quick id link will be attached as well.
Wood:
The rear stock looks complete and is the later WWII style with the reinforcing cross bolt.
The Front Vertical Grip may be Savage or a repro. look in the channel for a makers mark. Post a photo of the channel and from the front to show the contour.
The rear grip looks like an early Savage. Look at the top to see if there is an S or M marking. Need photo of that as well.
Bolt:
WWII stripped bolt, blued. look for an S, A.O.C. , or R The bolt is complete the firing pin, spring, hammer, hammer pin, and extractor are all in the mix.
Spring guide for 1928. Nickeled steel. Looks like WWII but may be a COLT era. Look for an S or AOC mark.
Colt ERA (or repro) 1921 Buffer Assembly complete, and Buffer assembly rear, incomplete
1921 Buffer Spring
1921 COLT Actuator with a missing Ear (need photo of the good ear knurling pattern)
Paperweight barrel torch cut.
West Hurley barrel with Cutts compensator (compensator does not appear to have the hole for cross pin) ( need side views of the Cutts Compensator)
1 x Brass blish lock Need close up photos. look for AOC or S on side = WWII era. No side markings, COLT Era (post photos)
WWII era or later mag catch with spring on the table
2 x 1928 round disc buffers
Rear Grip screw
Horizonal grip screw
Vertical Grip screw
WWII ring front sight. (what is the marking of the front of the sight) AOC?
WWII 3 piece ejector
2 x frame latches (buttons) at least one spring
WWII trigger (stevens)
Front sight for 1928 Cutts Compensator
2 x felt oilers
Pivot plate assembly
rockers, sear lever etc see list below for easy to match with your parts
springs
These links will solve most ID issues.
References
photos of parts with id number (Numrich)
https://www.gunparts...son/1928-45-acp
Parts for sale:
https://www.apexgunp...son-45-acp.html
https://www.robertrt...1928A1-c313.htm
https://www.sarcoinc...parts/thompson/
The references are just that, not an endorsement, just a quick place to look. There are many other great sellers out there as well.
Good luck.
Sandman1957
Edited by Sandman1957, 01 April 2021 - 08:08 AM.