just got this old model Navy

[OKCorral]

Hi everybody, this is my first posting on this forum, so let me start by saying it's great to be here! I'm mostly Colt collector but have few Remington revolvers in my collection. This particular gun I got at Baltimore show and this is the earliest Remington that came my way. I would love to hear opinions about it especially if it's possible to explain "PS" stamping on receiver and barrel. Unfortunately cylinder pin is broken and I don't have a clue where to find one maybe somebody can point me in the right direction (S&S dont have it)
Thank you all.

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