Anyone familiar with Walter Kidde 38's (converted O2 tanks) with bushings and dimple bottoms....are they worth collecting or restoring? I once had a set of round bottom WK's but sold them many years ago and now recently found these. They have been out of hydro since 1984 and I have not looked inside them. They are 1800 psi. but getting fills poses no problem as I have a compressor. My interest is retro twins/singles and plan to send off for hydro if I get them. Are they worth the effort?
Any input appreciated.