Dwaynesphoto.com can do 127, not sure if they are where you want to send vintage film though. I have been successful with old film in HC110 dilB for about 7 minutes (i've done B&W and old color in this way with decent results). Remember, most of the plastic reels have an intermediate stop between 35mm and 120 for 127 film.
I currently develop my 127 rollfilm (Efke PL100) in 50:1 Rodinal on a Kinderman SS reel.
The last roll of Verichrome pan I developed was a roll of 620 that was shot by my sister during the early 1950's. I developed it in undiluted D-76 with a shot of Benzotriazole added because I expected fogging. It turned out fine.