You had me up until re-blued and play in the cyl. And I really like early Mod-28s. $525 is a bit of money. If your not happy with it, walk away.
I bought a S number last week at a club meeting for $450. Tight as a tick and lots of finish. It had Target grips. The really LNIB examples will continue to hold their sell price. Best

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Mike 2796
SoFo Bunch member