See also American Home c. Ins. Co. v. Harvey, 99 Ga. App. 582, 583 (1b) ( 109 S.E.2d 322) (1959), and cases cited therein. Examples of conditions and limitations that may be waived include: conditions as to title or ownership (see Christian v. Allstate Ins. Co., 239 Ga. 850 ( 239 S.E.2d 328) (1977); Barnum v. Sentry Insurance, 160 Ga. App. 213, 216 (2), 217 (3) ( 286 S.E.2d 445) (1981); Bankers Fire c. Ins. Co. v. Hopkins, 93 Ga. App. 246 ( 91 S.E.2d 298) (1956); conditions as to other insurance or cancellation of other insurance (see Chester v. State Farm c. Ins. Co., 121 Ga. App. 599 ( 174 S.E.2d 582) (1970); conditions as to pre-existing health conditions (see Interstate Life c. Ins. Co. v. Merritt, 131 Ga. App. 825 ( 207 S.E.2d 231) (1974); American Life Ins. Co. v. Stone, 78 Ga. App. 98, 102 (2) ( 50 S.E.2d 231) (1948)); conditions concerning location of insured cars (see Liverpool c. Ins. Co. v. Ga. Auto c. Co., 29 Ga. App. 334, 353 (3), 357 ( 115 S.E. 138) (1922)); conditions requiring proof of loss (see New York Underwriters Ins. Co. v. Noles, 101 Ga. App. 922 ( 115 S.E.2d 474) (1960)); conditions requiring timely written notice (see Govt. Employees Ins. Co. v. Gates, 134 Ga. App. 795 ( 216 S.E.2d 619) (1975); exclusion based on age (see American Home c. Ins. Co. v. Harvey, 99 Ga. App. 582 ( 109 S.E.2d 322) (1959)); requirement of insurer's consent to assignment (see State Farm c. Co. v. Mills c. Co., 152 Ga. App. 531, 533 ( 263 S.E.2d 270) (1979)); requirement that all waivers be in writing (see South Carolina Ins. Co. v. Hunnicutt, 105 Ga. App. 257, 259 ( 124 S.E.2d 315) (1962)). See also 7 Blashfield, Automobile Law and Practice 449 et seq., § 303.21-303.