HELP! What tonearm is this? Jelco?

[Mr_Technics]

I recently purchased a Russco tonearm board for my turntable and it had what appeared to be a broken tonearm attached to it. Turns out it was not broken. It just needed reassembled and rewired. Now that I have it back in working order I am really curious what it is. I have searched all over the internet but can not find anything. Does anyone recognize this arm? I think it is "Russco Era". The tonearm board seems to be factory drilled for the arm. The headshell is not original.
It also had this tonearm lift.

 

[Nat]

Looks like a relative of the Jelco 250 BV, but flare in the picture makes details hard to discern. And it lacks the decorative top plate on the pivot, so hard to be sure.
Your cuing platform appears badly bent.

 

[Mr_Technics]

Jelco 250 BV

I realized I should have taken pictures before mounting it. I tried to take a few better photos.

 

[WaynerN]

I would say it is not a Jelco. However, Jelco did build tonearms for other table companies, so who knows. I have never seen this arm before.

 

[Mr_Technics]

I would say it is not a Jelco. However, Jelco did build tonearms for other table companies, so who knows. I have never seen this arm before.

I am also questioning if it is a Jelco. The mount look exactly like other model Jelco's but the tonearm itself doesn't match any of my searches. I found this post. It looks like someone else has went down this rabbit hole before.

https://audiokarma.org/forums/index.php?threads/which-jelco-tonearm-is-this.480793/

 

[Nat]

The clearer pictures show the parts I wondered about, so I'm pretty sure it is a Jelco. The cuing mechanism is in your hand, not in the platform, and the arm rest is completely missing, but the set up is clearly the same as in the Jelco 250 BV. The top of the pivot block looks different, but my guess is that there was a decorative plastic cap that is missing.