HM, I believe the depot proof is Su27.
To the OP, probably hard to read but that should actually be a Wa135 directly under the byf on the stock, it would have been proofed before it was supplied to the depot system and subsequently used at a depot.
I've been following this thread, I knew the gun was a Spandau rework from the first post, and I'm happy to see so many people catch on and figure this rifle out (hopefully from what they have learned here on the forum and from the books). Spandau has some unique features that other depots don't, but the stock markings were the easy giveaway. What is interesting is the reuse of the barrel but no additional pressure proof testing eagle added. Rarely do you see guns where an old barrel was reused, I assume it most that come through depots are worn (it makes sense that the most worn/used rifles would be the ones to go up the chain to the big depots). So, that in itself is interesting and something I don't recall seeing before. The ground numbering would be suspect if it wasn't for the fact that the rest of the rifle looks good - I can tell you the German people were frugal, and repaired almost everything in lieu of replacing it. I have an interesting pick up for my first 98k of the year that relates directly to this rifle (in that a barrel was reused), I'll post some photos of it after I get some pics taken. I devoted a whole chapter to reworks and depot builds in Volume II, if you have any interest in continuing your collecting of 98k's I would say it's worthwhile to get the set. We have plenty of Vol.II books but Vol.1 is starting to sell down - should make it until the end of the year no problem (as long as dealers don't buy large stocks), but soon enough we will only have Vol.II left.
Did you not post a photo of the bolt root serial? I'd be interested in seeing that, maybe I could point out something good. Also, any numbers on the trigger guard - hint, look for a number on the side of the trigger guard loop, and look for that same number on other parts (like inside the stock, bottom of receiver).
As a 10th group guy, you have probably run across some good stuff like this...too bad you can't really get them home....
Leave it to commo guys to gravitate the milsurps late...you should be an 18b!
Anyway, yeah, 98k''s are awesome, and you got yourself a cool one out of the gate....I like the oddballs, while they tend not to gain as much respect or $$$ as a run of the mill matching gun, they tell more of a story.
The big problem is they aren't known or as understood, as a few long time 98k guys called this first as bad...so a lot of times the odd balls slip through...
The best place to find really good rifles at fair prices and little risk is to watch the traderived board here, shananigans aren't tolerated, and with everyone here, any humored or bad guns get called out immediately...we take care of our own...
..when a rifle has flipped factory serial or 1 digit off error and people have to explain that to get the going rate. This will need a 2 page description to sell it and many will be put off or call BS except the super collector
..I'm happy to see so many people catch on and figure this rifle out (hopefully from what they have learned here on the forum and from the books).