I sent my I-751 on 22nd. It arrived next day at VSC, and the two checks I sent were cashed promptly two days later on 25nd.
VSC at least cashed checks pretty fast.
Hope they are fast in sending out NOAs too!
Does the receipt no. that I need to input in the USCIS case status alert web page is given on NOA?
I can see some handwritten numbers in the image of my cashed check.
But I think I heard people say that those numbers don't work.
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Jan 22 - Send in I-751 via express mail.
Jan 23 - Received at VSC (according to USPS).
Jan 25 - Two Checks ($205 & $70) cashed by USCIS.