thanks for the replies....the mib was made in anmore , wv in the 30s-early 40s....master marble was co was made after a spat with workers at akro agate and split into their own company.....this style mimiced the akro sparkler......the company then for a few years was known as master made until it quit in 1941....hard to find without damage so a near mint shooter like this would sell for 50-60$....started back up in 47 and then recorporated with akro who closed in 51...